diff --git a/admin/main/submenu/settings/include/config.php b/admin/main/submenu/settings/include/config.php
index 3cfe04b..2c6336a 100644
--- a/admin/main/submenu/settings/include/config.php
+++ b/admin/main/submenu/settings/include/config.php
@@ -46,4 +46,18 @@ $data['env'] = $app->env();
         </td>
     </tr>
 </table>
+<br>
+
+<?php
+Bitrix\Main\Loader::includeModule('iblock');
+?>
+<table cellpadding="5" border="1" style="border-collapse: collapse; width: 100%">
+    <?php
+    $this->renderCustomClassChecker(
+            'Bitrix\IBlock\Component\ElementList',
+            'Bitrix\IBlock\Component\OriginElementList',
+            'Ixrs\Catalog\Interfaces\IBlock\Component\IElementList'
+    );
+    ?>
+</table>
 <br>
\ No newline at end of file
diff --git a/init.php b/init.php
new file mode 100644
index 0000000..3965595
--- /dev/null
+++ b/init.php
@@ -0,0 +1,29 @@
+<?php
+
+use Bitrix\Main\Application;
+use Bitrix\Main\EventManager;
+use Bitrix\Main\Loader;
+
+if(!Loader::includeModule('wt.core')){
+    return false;
+}
+
+if(!Loader::includeModule('ixrs.catalog')){
+    return false;
+}
+
+if(catalog_base_app()->isIncludeFileToInitPhp()){
+    return false;
+}
+catalog_base_app()->isIncludeFileToInitPhp(true);
+
+$isAdminSection = \Bitrix\Main\Application::getInstance()->getContext()->getRequest()->isAdminSection();
+
+
+$dbType = Application::getConnection()->getType();
+Loader::includeModule('iblock');
+$arClasses = [
+    'Bitrix\Iblock\Component\ElementList' => 'modules/iblock/lib/component/elementlist.php',
+];
+
+Loader::registerAutoLoadClasses('ixrs.catalog', $arClasses);
diff --git a/lib/Interfaces/IBlock/Component/IElementList.php b/lib/Interfaces/IBlock/Component/IElementList.php
new file mode 100644
index 0000000..1fddbcb
--- /dev/null
+++ b/lib/Interfaces/IBlock/Component/IElementList.php
@@ -0,0 +1,8 @@
+<?php
+
+namespace Ixrs\Catalog\Interfaces\IBlock\Component;
+
+interface IElementList
+{
+
+}
\ No newline at end of file
diff --git a/lib/Support/ElementList.php b/lib/Support/ElementList.php
new file mode 100644
index 0000000..390624e
--- /dev/null
+++ b/lib/Support/ElementList.php
@@ -0,0 +1,148 @@
+<?php
+
+namespace Ixrs\Catalog\Support;
+
+class ElementList
+{
+
+    public static function getGlobalFilter($iBlockId, $globalFilter)
+    {
+
+        $pFilter = [];
+        $af = app()->factory()->iBlock()->getEntityById($iBlockId);
+        $iBlockFactory = app()->factory()->main()->getIBlockFactory();
+        $iBlockEntity = $iBlockFactory->getEntityById($iBlockId);
+
+        $propertyFactory = $af->getPropertyFactory();
+        if($iBlockEntity->getCatalogEntity()->hasOffers()){
+            $offerAf = app()->factory()->iBlock()->getEntityById($iBlockEntity->getCatalogEntity()->getOfferBlockId());
+            $offerPropertyFactory = $offerAf->getPropertyFactory();
+
+            foreach ($globalFilter as $key => $values){
+                $res = \Ixrs\Catalog\Support\IBlock::getOperationFilter($key);
+                // $res = \CIBlock::MkOperationFilter($key);
+
+                if(!$res) {
+                    continue;
+                }
+
+                $propertyId = $res['ID'];
+                $propertyEntity = $propertyFactory->getEntityById($propertyId);
+                if(!$propertyEntity){
+                    continue;
+                }
+                $offerPropertyEntity = $offerPropertyFactory->getCollection([
+                    '=CODE' => $propertyEntity->getCode(),
+                    '=XML_ID' => $propertyEntity->getXmlId(),
+                    '=PROPERTY_TYPE' => $propertyEntity->getBaseType(),
+                    '=USER_TYPE' => $propertyEntity->getUserType(),
+                    '=ACTIVE' => 'Y',
+                ])->first();
+
+                if(!$offerPropertyEntity){
+                    continue;
+                }
+
+                /**
+                 * @var array $values
+                 */
+                $oKey = $res['PREFIX'] . 'PROPERTY_' . $offerPropertyEntity->getId();
+                $values = (array)$values;
+
+                $pFilter[$propertyId]['E'] = [];
+                $pFilter[$propertyId]['O'] = [];
+
+                foreach ($values as $value){
+                    $oValue = $value;
+                    if($propertyEntity->getBaseType() === 'L' && $propertyEntity->getValueFactory()){
+                        $pve = $propertyEntity->getValueFactory()->getEntityById($oValue);
+                        $x = $pve->get('XML_ID');
+                        if($x){
+                            $opve = $offerPropertyEntity->getValueFactory()->getCollection(['XML_ID' => $x])->first();
+                            $oValue = $opve?->getId();
+                        }
+                        else {
+                            $oValue = null;
+                        }
+                    }
+                    if($oValue){
+                        if(isset($globalFilter[$key])){
+                            $globalFilter[$key] = collect($globalFilter[$key])->deleteValues([$value])->toArray();
+                        }
+                        $pFilter[$propertyId]['E'][$key][] = $value;
+                        $pFilter[$propertyId]['O'][$oKey][] = $oValue;
+                        if(isset($globalFilter['OFFERS'][$oKey])){
+                            $globalFilter['OFFERS'][$oKey] =
+                                collect($globalFilter['OFFERS'][$oKey])->deleteValues([$oValue])->toArray();
+                        }
+                    }
+                }
+
+                if($pFilter[$propertyId]['E'][$key] || $pFilter[$propertyId]['O'][$oKey]){
+                    if($globalFilter[$key]){
+                        $pFilter[$propertyId]['E'][$key] = array_merge($pFilter[$propertyId]['E'][$key], $globalFilter[$key]);
+                        unset($globalFilter[$key]);
+                    }
+                    if($globalFilter['OFFERS'][$oKey]){
+                        $pFilter[$propertyId]['O'][$oKey] = array_merge($pFilter[$propertyId]['O'][$oKey], $globalFilter['OFFERS'][$oKey]);
+                        unset($globalFilter['OFFERS'][$oKey]);
+                    }
+                }
+
+                if(!$globalFilter[$key]){
+                    unset($globalFilter[$key]);
+                }
+                if(!$globalFilter['OFFERS'][$oKey]){
+                    unset($globalFilter['OFFERS'][$oKey]);
+                }
+            }
+        }
+
+        /** inject */
+        $oFilter = [];
+        if($pFilter){
+            foreach ($pFilter as $ePId => $item) {
+                $data = [];
+
+                foreach ($item['E'] as $fKey => $values) {
+                    foreach ($values as $value){
+                        $data[] = [$fKey => $value];
+                    }
+                }
+                foreach ($item['O'] as $fKey => $values) {
+                    $oFilter[$fKey] = $values;
+                    foreach ($values as $value){
+                        $data[] = ['=ID' => \CIBlockElement::SubQuery(
+                            'PROPERTY_'.$iBlockEntity->getCatalogEntity()->getSkuPropertyId(),
+                            array_merge([
+                                'IBLOCK_ID' => $iBlockEntity->getCatalogEntity()->getOfferBlockId(),
+                                'ACTIVE_DATE' => 'Y',
+                                'ACTIVE' => 'Y',
+                            ], [$fKey => $value])
+                        )];
+                    }
+                }
+
+                if($data){
+                    $globalFilter[] = array_merge([
+                        'LOGIC' => 'OR',
+                    ], $data);
+                }
+            }
+
+            //if(!is_array($this->storage['SUB_FILTER'])){
+            //    $this->storage['SUB_FILTER'] = [];
+            //}
+            //foreach ($oFilter as $fKey => $values) {
+            //    if(isset($this->storage['SUB_FILTER'][$fKey])){
+            //        $this->storage['SUB_FILTER'][$fKey] =
+            //            collect((array)$this->storage['SUB_FILTER'][$fKey])->merge($values)->unique()->toArray();
+            //    }
+            //    else {
+            //        $this->storage['SUB_FILTER'][$fKey] = $values;
+            //    }
+            //}
+        }
+        return $globalFilter;
+    }
+}
\ No newline at end of file
diff --git a/lib/Support/IBlock.php b/lib/Support/IBlock.php
new file mode 100644
index 0000000..8419f91
--- /dev/null
+++ b/lib/Support/IBlock.php
@@ -0,0 +1,42 @@
+<?php
+
+namespace Ixrs\Catalog\Support;
+
+class IBlock
+{
+    static array $operations = [
+        '!><' => 'NB', //not between
+        '!='  => 'NI', //not Identical
+        '!%'  => 'NS', //not substring
+        '><'  => 'B',  //between
+        '>='  => 'GE', //greater or equal
+        '<='  => 'LE', //less or equal
+        '='   => 'I', //Identical
+        '%'   => 'S', //substring
+        '?'   => '?', //logical
+        '>'   => 'G', //greater
+        '<'   => 'L', //less
+        '!'   => 'N', // not field LIKE val
+        '*'   => 'FT', // partial full text match
+        '*='  => 'FTI', // identical full text match
+        '*%'  => 'FTL', // partial full text match based on LIKE
+    ];
+
+    public static function getOperationFilter($key)
+    {
+        $re = '/^(!><|!=|!%|><|>=|<=|=|%|\?|>|<|!|\*|\*=|\*%)?(PROPERTY_)(\d+)$/m';
+
+        $matches = [];
+        $r = preg_match($re, $key, $matches);
+
+        if($r){
+            return [
+                'FIELD' => mb_strtoupper($matches[2] . $matches[3]),
+                'OPERATION' => static::$operations[$matches[1]]??'',
+                'PREFIX' => $matches[1],
+                'ID' => $matches[3],
+            ];
+        }
+        return [];
+    }
+}
\ No newline at end of file
diff --git a/lib/Support/SmartFilter.php b/lib/Support/SmartFilter.php
new file mode 100644
index 0000000..da4e02f
--- /dev/null
+++ b/lib/Support/SmartFilter.php
@@ -0,0 +1,385 @@
+<?php
+
+namespace Ixrs\Catalog\Support;
+
+class SmartFilter
+{
+
+
+    public static function getPreparedCombo($iBlockId, $combo)
+    {
+        //pre('getPreparedCombo');
+        $result = [];
+        $af = app()->factory()->iBlock()->getEntityById($iBlockId);
+        $iBlockFactory = app()->factory()->main()->getIBlockFactory();
+        $iBlockEntity = $iBlockFactory->getEntityById($iBlockId);
+
+        if(!$iBlockEntity->getCatalogEntity()->hasOffers()) {
+            return $combo;
+        }
+        $propertyFactory = $af->getPropertyFactory();
+        $offerAf = app()->factory()->iBlock()->getEntityById($iBlockEntity->getCatalogEntity()->getOfferBlockId());
+        $offerPropertyFactory = $offerAf->getPropertyFactory();
+
+        foreach ($combo as $i => $combination){
+            $result[] = $combination;
+            foreach ($combination as $propertyId => $value){
+                $propertyEntity = $propertyFactory->getEntityById($propertyId);
+                if(!$propertyEntity){
+                    continue;
+                }
+//                $offerPropertyEntity = $offerPropertyFactory->getCollection([
+//                    '=CODE' => $propertyEntity->getCode(),
+//                    '=XML_ID' => $propertyEntity->getXmlId(),
+//                    '=PROPERTY_TYPE' => $propertyEntity->getBaseType(),
+//                    '=USER_TYPE' => $propertyEntity->getUserType(),
+//                    '=ACTIVE' => 'Y',
+//                ])->first();
+                $offerPropertyEntity = $offerPropertyFactory->getEntityByCode($propertyEntity->getCode());
+                if(!$offerPropertyEntity){
+                    continue;
+                }
+                if(!isset($combination[$offerPropertyEntity->getId()])){
+                    continue;
+                }
+                if($combination[$offerPropertyEntity->getId()] === false){
+                    continue;
+                }
+
+                $v = $combo[$i][$offerPropertyEntity->getId()];
+                unset($combo[$i][$offerPropertyEntity->getId()]);
+                $c = $combo[$i];
+                $c[$propertyId] = $v;
+
+                $result[] = $c;
+
+
+            }
+        }
+
+        return $result;
+    }
+
+
+    public static function getPreparedItems($iBlockId, $items, $filterName, $deleteOffersProps = true)
+    {
+        //pre('getPreparedItems ' . ($deleteOffersProps?'true':'false'));
+        $af = app()->factory()->iBlock()->getEntityById($iBlockId);
+        $iBlockFactory = app()->factory()->main()->getIBlockFactory();
+        $iBlockEntity = $iBlockFactory->getEntityById($iBlockId);
+        $propertyFactory = $af->getPropertyFactory();
+
+        if(!$iBlockEntity->getCatalogEntity()->hasOffers()) {
+            return $items;
+        }
+
+
+        $offerAf = app()->factory()->iBlock()->getEntityById($iBlockEntity->getCatalogEntity()->getOfferBlockId());
+        $offerPropertyFactory = $offerAf->getPropertyFactory();
+
+        foreach ($items as $propertyId => $property){
+
+            $propertyEntity = $propertyFactory->getEntityById($propertyId);
+            if(!$propertyEntity){
+                continue;
+            }
+
+            $offerPropertyEntity = $offerPropertyFactory->getEntityByCode($propertyEntity->getCode());
+            if(!$offerPropertyEntity){
+                continue;
+            }
+
+            if(!isset($items[$offerPropertyEntity->getId()])){
+                continue;
+            }
+
+            $oValues = $items[$offerPropertyEntity->getId()]['VALUES'];
+            $oValuesReserve = $oValues;
+            foreach ($oValuesReserve as &$oValue){
+                $oValue['IBLOCK_ID'] = $offerAf->getBlockId();
+                $oValue['PROPERTY_ID'] = $offerPropertyEntity->getId();
+            }
+            unset($oValue);
+
+            foreach ($oValues as $propertyValueId => $propertyValue){
+
+                $key = null;
+                foreach ($items[$propertyId]['VALUES'] as $propertyValueId2 => $propertyValueValue){
+                    if($propertyValue['VALUE'] === $propertyValueValue['VALUE']){
+                        $key = $propertyValueId2;
+                        break;
+                    }
+                }
+                if(is_null($key)){
+                    continue;
+                }
+
+                unset($oValuesReserve[$propertyValueId]);
+
+                if($deleteOffersProps){
+                    unset($items[$offerPropertyEntity->getId()]['VALUES'][$propertyValueId]);
+                    if(!$items[$offerPropertyEntity->getId()]['VALUES']){
+                        unset($items[$offerPropertyEntity->getId()]);
+                    }
+                }
+
+                $items[$propertyId]['VALUES'][$key]['DISABLED'] ??= false;
+                $propertyValue['DISABLED'] ??= false;
+                $items[$propertyId]['VALUES'][$key]['DISABLED'] =
+                    $items[$propertyId]['VALUES'][$key]['DISABLED'] && $propertyValue['DISABLED'];
+
+                $items[$propertyId]['VALUES'][$key]['CHECKED'] ??= false;
+                $propertyValue['CHECKED'] ??= false;
+                $items[$propertyId]['VALUES'][$key]['CHECKED'] =
+                    $items[$propertyId]['VALUES'][$key]['CHECKED'] || $propertyValue['CHECKED'];
+
+
+                //if($items[$propertyId]['VALUES'][$key]['CONTROL_ID'] !== $propertyValue['CONTROL_ID']) {
+                //    $items[$propertyId]['VALUES'][$key]['ELEMENT_COUNT'] += $propertyValue['ELEMENT_COUNT'];
+                //}
+            }
+
+            //foreach ($items[$propertyId]['VALUES'] as $propertyValueId => &$propertyValue){
+            //    $propertyValue['CONTROL_NAME_ALT'] = $filterName . '_' . $propertyEntity->getId();
+            //    $propertyValue['CONTROL_NAME'] = $propertyValue['CONTROL_NAME_ALT'] . '_' . $propertyValue['HTML_VALUE_ALT'];
+            //    $propertyValue['CONTROL_ID'] = $propertyValue['CONTROL_NAME_ALT'] . '_' . $propertyValue['HTML_VALUE_ALT'];
+            //}
+            //unset($propertyValue);
+
+
+            if($deleteOffersProps) {
+                unset($items[$offerPropertyEntity->getId()]);
+                $items[$propertyId]['VALUES'] = $items[$propertyId]['VALUES'] + $oValuesReserve;
+            }
+
+        }
+
+        return $items;
+    }
+
+    public static function getPreparedFacetIndex($iBlockId, $items, $filterName, $deleteOffersProps = true)
+    {
+        //pre('getPreparedFacetIndex');
+        $af = app()->factory()->iBlock()->getEntityById($iBlockId);
+        $iBlockFactory = app()->factory()->main()->getIBlockFactory();
+        $iBlockEntity = $iBlockFactory->getEntityById($iBlockId);
+        $propertyFactory = $af->getPropertyFactory();
+
+        if(!$iBlockEntity->getCatalogEntity()->hasOffers()) {
+            return $items;
+        }
+
+
+        $offerAf = app()->factory()->iBlock()->getEntityById($iBlockEntity->getCatalogEntity()->getOfferBlockId());
+        $offerPropertyFactory = $offerAf->getPropertyFactory();
+
+        foreach ($items as $propertyId => $values){
+
+            $propertyEntity = $propertyFactory->getEntityById($propertyId);
+            if(!$propertyEntity){
+                continue;
+            }
+
+            $offerPropertyEntity = $offerPropertyFactory->getEntityByCode($propertyEntity->getCode());
+            if(!$offerPropertyEntity){
+                continue;
+            }
+
+            if(!isset($items[$offerPropertyEntity->getId()])){
+                continue;
+            }
+            $oValues = $items[$offerPropertyEntity->getId()];
+            $oValuesReserve = $oValues;
+
+            foreach ($oValues as $facetId => $propertyValue){
+                $key = null;
+                foreach ($items[$propertyId] as $facetId2 => $propertyValueValue){
+                    if($propertyValue['VALUE'] === $propertyValueValue['VALUE']){
+                        $key = $facetId2;
+                        break;
+                    }
+                }
+                if(is_null($key)){
+                    continue;
+                }
+
+                unset($oValuesReserve[$facetId]);
+                if($deleteOffersProps){
+                    unset($items[$offerPropertyEntity->getId()][$facetId]);
+                    if(!$items[$offerPropertyEntity->getId()]){
+                        unset($items[$offerPropertyEntity->getId()]);
+                    }
+                }
+
+                $items[$propertyId][$key]['DISABLED'] ??= false;
+                $propertyValue['DISABLED'] ??= false;
+                $items[$propertyId][$key]['DISABLED'] =
+                    $items[$propertyId][$key]['DISABLED'] && $propertyValue['DISABLED'];
+
+                $items[$propertyId][$key]['CHECKED'] ??= false;
+                $propertyValue['CHECKED'] ??= false;
+                $items[$propertyId][$key]['CHECKED'] =
+                    $items[$propertyId][$key]['CHECKED'] || $propertyValue['CHECKED'];
+
+                if($items[$propertyId][$key]['CONTROL_ID'] !== $propertyValue['CONTROL_ID']) {
+                    $items[$propertyId][$key]['ELEMENT_COUNT'] += $propertyValue['ELEMENT_COUNT'];
+                }
+            }
+
+            //foreach ($items[$propertyId] as $facetId => &$propertyValue){
+            //    $propertyValue['CONTROL_NAME_ALT'] = $filterName . '_' . $propertyEntity->getId();
+            //    $propertyValue['CONTROL_NAME'] = $propertyValue['CONTROL_NAME_ALT'] . '_' . $propertyValue['HTML_VALUE_ALT'];
+            //    $propertyValue['CONTROL_ID'] = $propertyValue['CONTROL_NAME_ALT'] . '_' . $propertyValue['HTML_VALUE_ALT'];
+            //}
+            //unset($propertyValue);
+
+
+            //if($deleteOffersProps) {
+                //$items[$propertyId] = $items[$propertyId] + $oValuesReserve;
+            //}
+        }
+
+        return $items;
+    }
+
+    /**
+     * property id to offer property id
+     *
+     * @param $iBlockId
+     * @param $propertyId
+     * @return int|string|null
+     */
+    public static function getOfferPropertyId($iBlockId, $propertyId)
+    {
+
+        $af = app()->factory()->iBlock()->getEntityById($iBlockId);
+        $iBlockFactory = app()->factory()->main()->getIBlockFactory();
+        $iBlockEntity = $iBlockFactory->getEntityById($iBlockId);
+        $propertyFactory = $af->getPropertyFactory();
+
+        if(!$iBlockEntity->getCatalogEntity()->hasOffers()) {
+            return null;
+        }
+
+        $propertyEntity = $propertyFactory->getEntityById($propertyId);
+        if(!$propertyEntity){
+            return null;
+        }
+
+        $offerAf = app()->factory()->iBlock()->getEntityById($iBlockEntity->getCatalogEntity()->getOfferBlockId());
+        $offerPropertyFactory = $offerAf->getPropertyFactory();
+
+        $offerPropertyEntity = $offerPropertyFactory->getEntityByCode($propertyEntity->getCode());
+
+        return $offerPropertyEntity?->getId();
+    }
+
+    /**
+     * @param $iBlockId
+     * @param $propertyId
+     * @param int|string $propertyValueIndex модет быть id или xmlId
+     * @return void|null
+     */
+    public static function getOfferPropertyValueIndex($iBlockId, $propertyId, $propertyValueIndex)
+    {
+        $af = app()->factory()->iBlock()->getEntityById($iBlockId);
+        $iBlockFactory = app()->factory()->main()->getIBlockFactory();
+        $iBlockEntity = $iBlockFactory->getEntityById($iBlockId);
+        $propertyFactory = $af->getPropertyFactory();
+        $propertyEntity =$propertyFactory->getEntityById($propertyId);
+
+        if($iBlockEntity->getCatalogEntity()->hasOffers()) {
+            $offerAf = app()->factory()->iBlock()->getEntityById($iBlockEntity->getCatalogEntity()->getOfferBlockId());
+            $offerPropertyFactory = $offerAf->getPropertyFactory();
+
+
+            $offerPropertyEntity = $offerPropertyFactory->getEntityByCode($propertyEntity->getCode());
+
+            if (!$offerPropertyEntity) {
+                return null;
+            }
+            if($propertyEntity->getBaseType() === 'L' && $propertyEntity->getValueFactory()){
+                $pve = $propertyEntity->getValueFactory()->getEntityById($propertyValueIndex);
+                $xmlId = $pve?->getXmlId();
+                if($xmlId){
+                    $opve = $offerPropertyEntity->getValueFactory()->getEntityByXmlId($xmlId);
+                    return $opve?->getId();
+                }
+                return null;
+            }
+            return $propertyValueIndex;
+        }
+    }
+
+    /**
+     * @param $iBlockId
+     * @param $propertyId
+     * @param int|string $propertyValueIndex модет быть id или xmlId
+     * @return void|null
+     */
+    public static function getPropertyValueIndex($iBlockId, $oPropertyId, $oPropertyValueIndex)
+    {
+        $af = app()->factory()->iBlock()->getEntityById($iBlockId);
+        $iBlockFactory = app()->factory()->main()->getIBlockFactory();
+        $iBlockEntity = $iBlockFactory->getEntityById($iBlockId);
+        $propertyFactory = $af->getPropertyFactory();
+
+        if(!$iBlockEntity->getCatalogEntity()->hasOffers()) {
+            return null;
+        }
+        $offerAf = app()->factory()->iBlock()->getEntityById($iBlockEntity->getCatalogEntity()->getOfferBlockId());
+        $offerPropertyFactory = $offerAf->getPropertyFactory();
+        $offerPropertyEntity = $offerPropertyFactory->getEntityById($oPropertyId);
+
+        if(!$offerPropertyEntity){
+            return null;
+        }
+        //pre("{$offerPropertyEntity->getId()} {$offerPropertyEntity->getCode()} {$oPropertyValueIndex}");
+        $propertyEntity = $propertyFactory->getEntityByCode($offerPropertyEntity->getCode());
+
+        if (!$propertyEntity) {
+            return null;
+        }
+        if($offerPropertyEntity->getBaseType() === 'L' && $offerPropertyEntity->getValueFactory()){
+            $pve = $offerPropertyEntity->getValueFactory()->getEntityById($oPropertyValueIndex);
+            $xmlId = $pve?->getXmlId();
+            if($xmlId){
+                $opve = $propertyEntity->getValueFactory()->getEntityByXmlId($xmlId);
+                return $opve?->getId();
+            }
+            return null;
+        }
+        return $oPropertyValueIndex;
+    }
+
+    /**
+     * offer property id to property id
+     *
+     * @param $iBlockId
+     * @param $offerPropertyId
+     * @return int|string|null
+     */
+    public static function getPropertyId($iBlockId, $offerPropertyId)
+    {
+
+        $af = app()->factory()->iBlock()->getEntityById($iBlockId);
+        $iBlockFactory = app()->factory()->main()->getIBlockFactory();
+        $iBlockEntity = $iBlockFactory->getEntityById($iBlockId);
+        $propertyFactory = $af->getPropertyFactory();
+
+        if(!$iBlockEntity->getCatalogEntity()->hasOffers()) {
+            return null;
+        }
+        $offerAf = app()->factory()->iBlock()->getEntityById($iBlockEntity->getCatalogEntity()->getOfferBlockId());
+        $offerPropertyFactory = $offerAf->getPropertyFactory();
+        $offerPropertyEntity = $offerPropertyFactory->getEntityById($offerPropertyId);
+
+        if(!$offerPropertyEntity){
+            return null;
+        }
+
+        $propertyEntity = $propertyFactory->getEntityByCode($offerPropertyEntity->getCode());
+
+        return $propertyEntity?->getId();
+    }
+}
\ No newline at end of file
diff --git a/lib/Support/combo.php.example b/lib/Support/combo.php.example
new file mode 100644
index 0000000..58453f8
--- /dev/null
+++ b/lib/Support/combo.php.example
@@ -0,0 +1,58 @@
+<?php
+return [
+    0 =>
+        [
+            876 => 'Акция',
+            877 => 'SHIKstudio',
+            878 => false,
+            1247 => 'Россия',
+            1250 => false,
+            906 => false,
+            1251 => false,
+            1252 => false,
+            1255 => false,
+            1256 => false,
+            1257 => false,
+            1258 => false,
+            1259 => false,
+            1260 => false,
+            1261 => false,
+            1262 => false,
+            1263 => false,
+            1264 => false,
+            1265 => false,
+            1266 => false,
+            1267 => false,
+            1269 => false,
+            1489 => false,
+            1 => false,
+        ],
+    1 =>
+        [
+            876 => 'Акция',
+            877 => 'SHIKstudio',
+            878 => 'Y',
+            1247 => 'Россия',
+            1250 => false,
+            906 => false,
+            1251 => false,
+            1252 => false,
+            1255 => false,
+            1256 => false,
+            1257 => false,
+            1258 => false,
+            1259 => false,
+            1260 => false,
+            1261 => false,
+            1262 => false,
+            1263 => false,
+            1264 => false,
+            1265 => false,
+            1266 => false,
+            1267 => false,
+            1269 => false,
+            1489 => false,
+            1 => false,
+        ],
+    // ...
+];
\ No newline at end of file
diff --git a/lib/Support/facet_index.php.example b/lib/Support/facet_index.php.example
new file mode 100644
index 0000000..acddd39
--- /dev/null
+++ b/lib/Support/facet_index.php.example
@@ -0,0 +1,38 @@
+<?php
+
+return [
+    876 => // property id
+        [
+            394 => // FACET_VALUE
+                [
+                    'CONTROL_ID' => 'MAX_SMART_FILTER_876_4133288916',
+                    'CONTROL_NAME' => 'MAX_SMART_FILTER_876_4133288916',
+                    'CONTROL_NAME_ALT' => 'MAX_SMART_FILTER_876',
+                    'HTML_VALUE_ALT' => 4133288916,
+                    'HTML_VALUE' => 'Y',
+                    'VALUE' => 'Новинка',
+                    'SORT' => 300,
+                    'UPPER' => 'НОВИНКА',
+                    'FLAG' => true,
+                    'URL_ID' => 'new',
+                    'FACET_VALUE' => '394',
+                    'ELEMENT_COUNT' => '207',
+                ],
+            395 =>
+                [
+                    'CONTROL_ID' => 'MAX_SMART_FILTER_876_2170276674',
+                    'CONTROL_NAME' => 'MAX_SMART_FILTER_876_2170276674',
+                    'CONTROL_NAME_ALT' => 'MAX_SMART_FILTER_876',
+                    'HTML_VALUE_ALT' => 2170276674,
+                    'HTML_VALUE' => 'Y',
+                    'VALUE' => 'Акция',
+                    'SORT' => 400,
+                    'UPPER' => 'АКЦИЯ',
+                    'FLAG' => true,
+                    'URL_ID' => 'stock',
+                    'FACET_VALUE' => '395',
+                    'ELEMENT_COUNT' => '56',
+                ],
+        ],
+    // 877 => ...
+];
\ No newline at end of file
diff --git a/modules/iblock/lib/component/OriginElementList.php b/modules/iblock/lib/component/OriginElementList.php
new file mode 100644
index 0000000..faaa8d2
--- /dev/null
+++ b/modules/iblock/lib/component/OriginElementList.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace Bitrix\Iblock\Component;
+
+/**
+ * @see bitrix/modules/iblock/lib/component/elementlist.php
+ */
+class OriginElementList extends ElementList
+{
+
+}
\ No newline at end of file
diff --git a/modules/iblock/lib/component/elementlist.php b/modules/iblock/lib/component/elementlist.php
new file mode 100644
index 0000000..7d2d9c1
--- /dev/null
+++ b/modules/iblock/lib/component/elementlist.php
@@ -0,0 +1,104 @@
+<?php
+
+namespace Bitrix\Iblock\Component;
+
+if(class_exists('Bitrix\Iblock\Component\ElementList', false)){
+    throw new \Exception('Class Bitrix\Iblock\Component\ElementList already loaded');
+}
+if(!class_exists('Bitrix\Iblock\Component\ElementList', false)){
+    $dirPath = $_SERVER['DOCUMENT_ROOT'].BX_PERSONAL_ROOT.'/modules/iblock/lib/component';
+    $filePath = $dirPath . '/elementlist.php';
+
+    $fileContent = file_get_contents($filePath);
+
+    $fileContent = str_replace('class ElementList', 'class OriginElementList', $fileContent);
+
+    $fileContent = str_replace('private ', 'protected ', $fileContent);
+    $fileContent = str_replace('self::', 'static::', $fileContent);
+    $fileContent = str_replace('__DIR__', var_export($dirPath, true), $fileContent);
+    $fileContent = str_replace('__FILE__', var_export($filePath, true), $fileContent);
+
+    eval('?>' . $fileContent);
+}
+
+use Ixrs\Catalog\Interfaces\IBlock\Component\IElementList;
+
+/**
+ * @see bitrix/modules/iblock/lib/component/elementlist.php
+ */
+class ElementList extends OriginElementList implements IElementList
+{
+
+    protected function initSubQuery()
+    {
+        $this->storage['SUB_FILTER'] = array();
+
+        if (
+            $this->useCatalog
+            && !$this->isMultiIblockMode()
+            && $this->offerIblockExist($this->arParams['IBLOCK_ID'])
+        )
+        {
+            $catalogFilter = array();
+            foreach ($this->globalFilter as $key => $value)
+            {
+                if (\CProductQueryBuilder::isCatalogFilterField($key))
+                {
+                    //TODO: remove this hack after new catalog.section filter
+                    if ($key === '=PRODUCT_UF_PRODUCT_MAPPING')
+                    {
+                        continue;
+                    }
+                    $catalogFilter[$key] = $value;
+                    unset($this->globalFilter[$key]);
+                }
+            }
+
+            $iblock = $this->storage['CATALOGS'][$this->arParams['IBLOCK_ID']];
+
+            /** inject */
+            $this->globalFilter = \Ixrs\Catalog\Support\ElementList::getGlobalFilter($this->arParams['IBLOCK_ID'], $this->globalFilter);
+            /** inject end */
+
+            $offersFilterExists = !empty($this->globalFilter['OFFERS']) && is_array($this->globalFilter['OFFERS']);
+
+            if ($offersFilterExists)
+            {
+                $this->storage['SUB_FILTER'] = array_merge($this->globalFilter['OFFERS'], $catalogFilter);
+                $this->storage['SUB_FILTER']['IBLOCK_ID'] = $iblock['IBLOCK_ID'];
+                $this->storage['SUB_FILTER']['ACTIVE_DATE'] = 'Y';
+                $this->storage['SUB_FILTER']['ACTIVE'] = 'Y';
+
+                if ($this->arParams['HIDE_NOT_AVAILABLE'] === 'Y')
+                {
+                    $this->storage['SUB_FILTER']['AVAILABLE'] = 'Y';
+                }
+
+                $this->filterFields['=ID'] = \CIBlockElement::SubQuery(
+                    'PROPERTY_'.$iblock['SKU_PROPERTY_ID'],
+                    $this->storage['SUB_FILTER']
+                );
+            }
+            elseif (!empty($catalogFilter))
+            {
+                $this->storage['SUB_FILTER'] = $catalogFilter;
+                $this->storage['SUB_FILTER']['IBLOCK_ID'] = $iblock['IBLOCK_ID'];
+                $this->storage['SUB_FILTER']['ACTIVE_DATE'] = 'Y';
+                $this->storage['SUB_FILTER']['ACTIVE'] = 'Y';
+
+                $this->filterFields[] = array(
+                    'LOGIC' => 'OR',
+                    array($catalogFilter),
+                    '=ID' => \CIBlockElement::SubQuery(
+                        'PROPERTY_'.$iblock['SKU_PROPERTY_ID'],
+                        $this->storage['SUB_FILTER']
+                    ),
+                );
+            }
+
+
+
+        }
+    }
+
+}
\ No newline at end of file