diff --git a/assets/collection/collection.js b/assets/collection/collection.js
index f7915a1..33b384b 100644
--- a/assets/collection/collection.js
+++ b/assets/collection/collection.js
@@ -22,27 +22,26 @@ kit.PluginManager.register('Collection', function(module, exports, require, glob
         return new Collection([]);
     }
 
-    function setLastIndex(key){
-        var n = Number(key);
-        if (support.arr.isKey(key) && n > this.__lastIndex) {
-            this.__lastIndex = n;
-        }
-        return this.__lastIndex;
-    }
-    function actualParams() {
-        var index;
-        this.length = this.__keys.length;
-        this.__lastIndex = 0;
-        for(index in this.__keys) {
-            setLastIndex.call(this, this.__keys[index]);
-        }
-    }
     /**
      * @class Collection
+     * @property length
      * @memberOf kit
      */
     var Collection = function (data = []) {
+        var self = this;
         this.data = data;
+
+        support.definePropertyGet(this, 'length', function () {
+            return self.__keys.length;
+        });
+
+        if(data instanceof Collection) {
+            this.__type = data.__type;
+            this.__keys = data.__keys;
+            this.__values = data.__values;
+            return;
+        }
+
         if(Array.isArray(data)) {
             this.__type = 'array';
         }
@@ -58,18 +57,28 @@ kit.PluginManager.register('Collection', function(module, exports, require, glob
             console.warn('collection: not support data' + typeof data);
         }
         var key;
-        this.__lastIndex = 0;
-        this.length = 0;
         this.__keys = [];
         this.__values = [];
         for(key in this.data) {
             if(!this.data.hasOwnProperty(key)) continue;
-            setLastIndex.call(this, key);
-            this.length = this.__keys.push(safeArrayKey(key));
+            this.__keys.push(safeArrayKey(key));
             this.__values.push(this.data[key]);
         }
     };
 
+    /**
+     * @private
+     */
+    Collection.prototype.__getLastIndex = function () {
+        var lastIndex = -1, n = 0, index;
+        for(index in this.__keys) {
+            n = this.__keys[index];
+            if (support.isNumber(n) && n > lastIndex) {
+                lastIndex = n;
+            }
+        }
+        return lastIndex;
+    };
     Collection.prototype.all = function () {
         if(this.__type === 'array' || this.__type === 'arrayObject') {
             return this.toArray();
@@ -115,7 +124,6 @@ kit.PluginManager.register('Collection', function(module, exports, require, glob
         }
         this.length = this.__keys.push(safeArrayKey(key));
         this.data[key] = this.__values[this.length-1] = value;
-        setLastIndex.call(this, key);
         return this;
     };
     /**
@@ -123,7 +131,7 @@ kit.PluginManager.register('Collection', function(module, exports, require, glob
      * @return {kit.Collection}
      */
     Collection.prototype.push = function (value) {
-        this.set(this.__lastIndex + 1, value);
+        this.set(this.__getLastIndex() + 1, value);
         return this;
     };
     Collection.prototype.get = function (key, defValue = undefined) {
@@ -296,7 +304,6 @@ kit.PluginManager.register('Collection', function(module, exports, require, glob
         var index = this.indexKey(key);
         this.__keys.splice(index, 1);
         this.__values.splice(index, 1);
-        actualParams.call(this);
         delete this.data[key];
         return this;
     };
@@ -315,7 +322,6 @@ kit.PluginManager.register('Collection', function(module, exports, require, glob
         var value = this.__values[index];
         this.__keys.splice(index, 1);
         this.__values.splice(index, 1);
-        actualParams.call(this);
         delete this.data[key];
         return value;
     };
@@ -331,7 +337,6 @@ kit.PluginManager.register('Collection', function(module, exports, require, glob
         var value = this.__values[index];
         this.__keys.splice(index, 1);
         this.__values.splice(index, 1);
-        actualParams.call(this);
         delete this.data[key];
         return value;
     };
@@ -347,7 +352,6 @@ kit.PluginManager.register('Collection', function(module, exports, require, glob
         var value = this.__values[index];
         this.__keys.splice(index, 1);
         this.__values.splice(index, 1);
-        actualParams.call(this);
         delete this.data[key];
         return value;
     };
diff --git a/assets/core/core.register.js b/assets/core/core.register.js
index ffed094..1ff25e3 100644
--- a/assets/core/core.register.js
+++ b/assets/core/core.register.js
@@ -212,14 +212,20 @@ __PluginManager__.registerPlugins({
         path: __pmConfig__.assetsPath + '/testing',
         module: '/testing.js',
         type: 'loader',
-        deps: ['Logger'],
+        deps: ['loggerService'],
     },
     Logger: {
         path: __pmConfig__.assetsPath + '/logger',
         module: '/logger.js',
-        css: '/logger.css',
         type: 'loader',
-        deps: ['support']
+        deps: ['support', 'Collection']
+    },
+    loggerService: {
+        path: __pmConfig__.assetsPath + '/loggerService',
+        module: '/loggerService.js',
+        css: '/loggerService.css',
+        type: 'loader',
+        deps: ['Logger', 'support']
     },
 
 });
diff --git a/assets/logger/logger.js b/assets/logger/logger.js
index f973a4a..5e1d4d4 100644
--- a/assets/logger/logger.js
+++ b/assets/logger/logger.js
@@ -1,162 +1,61 @@
-/** @module logger */
+/** @module Logger */
 __PluginManager__.register('Logger', function(module, exports, require, global){
 
     var support = require('support');
-
-    var lightMap = [
-        {class: '', keys: []},
-        {class: 'text-danger', keys: []},
-        {class: 'text-secondary', keys: []},
-    ];
-    var getLightClass = function(key) {
-        key = ''+key;
-        var addClass = '', ar;
-        for(var i=0; i < lightMap.length; i++){
-            ar = lightMap[i]['keys'];
-            addClass = ar.includes(key)?lightMap[i]['class']:addClass;
-        }
-        return addClass;
-    };
-    var collectionTemplater = '<div class="kit-logger kit-logger--fixed"></div>';
-    // function dump(value) {
-    //     var rArray = [];
-    //     if(value === null) {
-    //         rArray[0] = 'null';
-    //     } else {
-    //         rArray[0] = String(typeof value);
-    //         rArray[1] = emptyPHP(value)?'empty':'';
-    //     }
-    //     return rArray.join(' ');
-    // };
-    function getRowNode(level, key, value, opClass = ''){
-        if(opClass) {
-            opClass = ' kit-logger-row--'+opClass;
-        }
-        var i = 0, lvlTemplate = '';
-        key = String(key);
-        value = String(value);
-        lvlTemplate = level?'style="--logger-lvl:'+level+';" ':'';
-        var result = '<logger-item '+lvlTemplate+'class="'+getLightClass(key)+opClass+'"><logger-item__key>'+key+'</logger-item__key><logger-item__value>'+value+'</logger-item__value></logger-item>';
-
-        return support.makeNode(result);
-    }
-    function getItemObjectNode(id = ''){
-        var entity = '', css = '', style = '';
-        if(id) {
-            css = '<style>input#'+id+':checked ~ [data-entity-id="'+id+'"] {display: block !important;}</style>';
-            entity = ' data-entity-id="'+id+'"';
-            style = ' style="display: none"'
-        }
-        return support.makeNode('<logger-item-object'+entity+style+'>'+css+'</logger-item-object>');
-    }
-
-    function args2array(arguments) {
-        var args = [];
-        for (var i = 0; i < arguments.length; i++) {
-            args.push(arguments[i]);
-        }
-        return args;
-    }
+    var Collection = require('Collection');
 
     /**
      * @class Logger
      * @memberOf kit
      */
     var Logger = function() {
-        this.collection = undefined;
+        this.collection = new Collection();
+        this.onLog = new Collection();
     };
+
     /**
-     * @param node {HTMLElement}
+     * @param collection {kit.Collection}
      */
-    Logger.prototype.setCollection = function (node) {
-        /**
-         * @type {HTMLElement}
-         */
-        this.collection = node || document.getElementById('kit-logger') || document.querySelector('.kit-logger') || support.makeNode(collectionTemplater);
-
-        if((this.collection instanceof HTMLElement) && !this.collection.parentElement) {
-            document.body.appendChild(this.collection)
-        }
-    };
-
-    Logger.prototype.__row = function(message, lvl = 0, opClass = '') {
-        if (!this.collection) {
-            this.setCollection();
-        }
-        var log = this.collection;
-
-        function setObjectValue(log, lvl, key, value, opClass, depth = 3, openDepth = 1, isRoot = true) {
-            var rowChild, isObj = support.isObject(value), id = isObj?support.uniqueId():'',
-                val = (isObj&&depth)?'<label for="'+id+'">'+value+'</label>':value, inp, j,
-                len = isObj?Object.keys(value).length:0;
-
-            if(!isRoot || (isRoot && !isObj)) {
-                log.appendChild(getRowNode(lvl, key, '' + val + (isObj?(' ['+len+']'):''), opClass));
-            }
-            if(isObj&&depth) {
-                !isRoot && ++lvl;
-                depth = Math.max(0, depth - 1);
-                log.appendChild(inp = support.makeNode('<input id="'+id+'" type="checkbox" style="display: none;">'));
-                inp.checked = !!openDepth;
-                openDepth = Math.max(0, openDepth - 1);
-                log.appendChild(rowChild = getItemObjectNode(id));
-                for(j in value) {
-                    if(value.hasOwnProperty(j))
-                        setObjectValue(rowChild, lvl, j, value[j], opClass, depth, openDepth, false);
-                }
-            }
-        }
-
-        setObjectValue(log, lvl, '', message, opClass, 6, 3);
-
-        log.scrollTop = log.scrollHeight;
-    };
-
-    Logger.prototype.__log = function(lvl, type, message, context){
-        lvl = Number(lvl);
-        var opClass = '';
-        if(arguments.length >= 2) opClass = type;
-        if(arguments.length >= 3)
-            this.__row(message, lvl, opClass);
-        if(arguments.length >= 4)
-            this.__row(context, lvl+1);
+    Logger.prototype.setCollection = function (collection) {
+        this.collection = collection;
     };
 
     Logger.prototype.emergency = function (message, context) {
-        this.__log.apply(this, [0, 'emergency'].concat(args2array(arguments)));
+        this.log(0, message, context, 'emergency');
     };
     Logger.prototype.alert = function (message, context) {
-        this.__log.apply(this, [0, 'alert'].concat(args2array(arguments)));
+        this.log(0, message, context, 'alert');
     };
     Logger.prototype.critical = function (message, context) {
-        this.__log.apply(this, [0, 'critical'].concat(args2array(arguments)));
+        this.log(0, message, context, 'critical');
     };
     Logger.prototype.error = function (message, context) {
-        this.__log.apply(this, [0, 'error'].concat(args2array(arguments)));
+        this.log(0, message, context, 'error');
     };
     Logger.prototype.warning = function (message, context) {
-        this.__log.apply(this, [0, 'warning'].concat(args2array(arguments)));
+        this.log(0, message, context, 'warning');
     };
     Logger.prototype.notice = function (message, context) {
-        this.__log.apply(this, [0, 'notice'].concat(args2array(arguments)));
+        this.log(0, message, context, 'notice');
     };
     Logger.prototype.info = function (message, context) {
-        this.__log.apply(this, [0, 'info'].concat(args2array(arguments)));
+        this.log(0, message, context, 'info');
     };
     Logger.prototype.debug = function (message, context) {
-        this.__log.apply(this, [0, 'debug'].concat(args2array(arguments)));
+        this.log(0, message, context, 'debug');
     };
     Logger.prototype.success = function (message, context) {
-        this.__log.apply(this, [0, 'success'].concat(args2array(arguments)));
+        this.log(0, message, context, 'success');
     };
     Logger.prototype.log = function (lvl = 0, message = '', context, type) {
-        lvl = Number(lvl);
-        var opClass = '';
-        if(arguments.length >= 4) opClass = type;
-        if(arguments.length >= 2)
-            this.__row(message, lvl, opClass);
-        if(arguments.length >= 3)
-            this.__row(context, lvl+1, opClass);
+        var data = {
+            lvl: lvl,
+            type: type,
+            message: message,
+            context: context,
+        };
+        this.collection.push(data);
+        this.onLog.eachCall(this, data);
     };
 
     return module.exports = Logger;
diff --git a/assets/logger/logger.css b/assets/loggerService/loggerService.css
similarity index 97%
rename from assets/logger/logger.css
rename to assets/loggerService/loggerService.css
index 0df8223..6f5ccdc 100644
--- a/assets/logger/logger.css
+++ b/assets/loggerService/loggerService.css
@@ -16,11 +16,13 @@
     font-family: monospace;
     background: hsla(0, 0%, 11%, 1);
     color: #909090;
-    height: 100%;
     overflow-y: scroll !important;
     word-break: break-all;
     display: block;
 }
+.kit-logger:empty, #kit-logger:empty {
+    display: none;
+}
 .kit-logger--fixed {
     position: sticky;
     bottom: 0;
diff --git a/assets/loggerService/loggerService.js b/assets/loggerService/loggerService.js
new file mode 100644
index 0000000..9fabe71
--- /dev/null
+++ b/assets/loggerService/loggerService.js
@@ -0,0 +1,134 @@
+/** @module loggerService */
+__PluginManager__.register('loggerService', function(module, exports, require, global){
+
+    var support = require('support');
+    var Logger = require('Logger');
+
+    var lightMap = [
+        {class: '', keys: []},
+        {class: 'text-danger', keys: []},
+        {class: 'text-secondary', keys: []},
+    ];
+    var getLightClass = function(key) {
+        key = ''+key;
+        var addClass = '', ar;
+        for(var i=0; i < lightMap.length; i++){
+            ar = lightMap[i]['keys'];
+            addClass = ar.includes(key)?lightMap[i]['class']:addClass;
+        }
+        return addClass;
+    };
+    var htmlCollectionTemplater = '<div class="kit-logger kit-logger--fixed"></div>';
+    // function dump(value) {
+    //     var rArray = [];
+    //     if(value === null) {
+    //         rArray[0] = 'null';
+    //     } else {
+    //         rArray[0] = String(typeof value);
+    //         rArray[1] = emptyPHP(value)?'empty':'';
+    //     }
+    //     return rArray.join(' ');
+    // };
+    function getRowNode(level, key, value, opClass = ''){
+        if(opClass) {
+            opClass = ' kit-logger-row--'+opClass;
+        }
+        var lvlTemplate;
+        key = String(key);
+        value = String(value);
+        lvlTemplate = level?'style="--logger-lvl:'+level+';" ':'';
+        var result = '<logger-item '+lvlTemplate+'class="'+getLightClass(key)+opClass+'"><logger-item__key>'+key+'</logger-item__key><logger-item__value>'+value+'</logger-item__value></logger-item>';
+
+        return support.makeNode(result);
+    }
+    function getItemObjectNode(id = ''){
+        var entity = '', css = '', style = '';
+        if(id) {
+            css = '<style>input#'+id+':checked ~ [data-entity-id="'+id+'"] {display: block !important;}</style>';
+            entity = ' data-entity-id="'+id+'"';
+            style = ' style="display: none"'
+        }
+        return support.makeNode('<logger-item-object'+entity+style+'>'+css+'</logger-item-object>');
+    }
+
+
+
+    /**
+     * @extends kit.Logger
+     * @class LoggerService
+     * @memberOf kit
+     */
+    var LoggerService = function() {
+        Logger.prototype.constructor.apply(this, arguments);
+        this.onLog.push(this.__log);
+    };
+
+    support.extend(LoggerService.prototype, Logger.prototype);
+
+    LoggerService.prototype.setHtmlCollection = function (node) {
+        /**
+         * @type {HTMLElement}
+         */
+        this.__htmlCollection = node || document.getElementById('kit-logger') || document.querySelector('.kit-logger') || support.makeNode(__htmlCollectionTemplater);
+
+        if((this.__htmlCollection instanceof HTMLElement) && !this.__htmlCollection.parentElement) {
+            document.body.appendChild(this.__htmlCollection)
+        }
+    };
+
+    LoggerService.prototype.__row = function(message, lvl = 0, opClass = '') {
+        if (!this.__htmlCollection) {
+            this.setHtmlCollection();
+        }
+        var log = this.__htmlCollection;
+
+        function setObjectValue(log, lvl, key, value, opClass, depth = 3, openDepth = 1, isRoot = true) {
+            var rowChild, isObj = support.isObject(value), id = isObj?support.uniqueId():'',
+                val = (isObj&&depth)?'<label for="'+id+'">'+value+'</label>':value, inp, j,
+                len = isObj?Object.keys(value).length:0;
+
+            if(!isRoot || (isRoot && !isObj)) {
+                log.appendChild(getRowNode(lvl, key, '' + val + (isObj?(' ['+len+']'):''), opClass));
+            }
+            if(isObj&&depth) {
+                !isRoot && ++lvl;
+                depth = Math.max(0, depth - 1);
+                log.appendChild(inp = support.makeNode('<input id="'+id+'" type="checkbox" style="display: none;">'));
+                inp.checked = !!openDepth;
+                openDepth = Math.max(0, openDepth - 1);
+                log.appendChild(rowChild = getItemObjectNode(id));
+                for(j in value) {
+                    if(value.hasOwnProperty(j))
+                        setObjectValue(rowChild, lvl, j, value[j], opClass, depth, openDepth, false);
+                }
+            }
+        }
+
+        setObjectValue(log, lvl, '', message, opClass, 6, 3);
+
+        log.scrollTop = log.scrollHeight;
+    };
+
+    LoggerService.prototype.__log = function(data = {
+        lvl: 0,
+        message: '',
+        context: [],
+        type: ''
+    }){
+        lvl = support.toNumber(data.lvl);
+        var opClass = String(data.type);
+        this.__row(data.message, lvl, opClass);
+        if(support.isObject(data.context))
+            this.__row(data.context, lvl+1);
+    };
+
+    /**
+     * @memberOf kit.service
+     * @class logger
+     **/
+    var logger = new LoggerService();
+
+    global.service.logger = logger;
+
+    module.exports = logger;
+});
diff --git a/assets/support/support.js b/assets/support/support.js
index ee6e78b..9fbf5bd 100644
--- a/assets/support/support.js
+++ b/assets/support/support.js
@@ -68,6 +68,13 @@ __PluginManager__.register('support', function(module, exports, require, global)
     function isNumber(value) {
         return !Number.isNaN(value) && isFinite(value) && typeof value === 'number';
     }
+    /**
+     * @return {number}
+     */
+    function toNumber(value, def = 0) {
+        var n = Number(value);
+        return isNumber(n)?n:def;
+    }
     function isInteger(value) {
         return isNumber(value) && (value % 1) === 0;
     }
@@ -134,7 +141,20 @@ __PluginManager__.register('support', function(module, exports, require, global)
         }
         return null;
     }
-
+    function definePropertyGet(obj, key, val) {
+        Object.defineProperty(obj, key, {
+            get: function () {
+                return valueEx(val);
+            },
+        });
+    }
+    function args2array(arguments) {
+        var args = [];
+        for (var i = 0; i < arguments.length; i++) {
+            args.push(arguments[i]);
+        }
+        return args;
+    }
     /**
      * @memberOf kit
      */
@@ -158,7 +178,10 @@ __PluginManager__.register('support', function(module, exports, require, global)
         isA,
         makeNode,
         setKit,
-        getKit
+        getKit,
+        toNumber,
+        definePropertyGet,
+        args2array
     };
 
     return module.exports = support;
diff --git a/assets/testing/testing.js b/assets/testing/testing.js
index eb49a62..e7f60ca 100644
--- a/assets/testing/testing.js
+++ b/assets/testing/testing.js
@@ -1,13 +1,22 @@
 /** @module testing */
 __PluginManager__.register('testing', function(module, exports, require, global){
 
+    var loggerService = require('loggerService');
+
     /**
      * @constructor
      */
     function Unit() {
-        this.logger = new kit.Logger();
+        this.logger = loggerService;
     }
 
+    /**
+     * @param logger {kit.Logger}
+     */
+    Unit.prototype.setLogger = function (logger) {
+        this.logger = logger;
+    };
+
     Unit.prototype.assertSame = function (expected, actual, message) {
         if(expected === actual) {
             this.logger.success({pass: message});
diff --git a/tests/index.php b/tests/index.php
index 6343ac7..8492fbb 100644
--- a/tests/index.php
+++ b/tests/index.php
@@ -1,17 +1,84 @@
+<script src="../assets/config/config.js"></script>
+<script src="../assets/core/core.js"></script>
+<script src="../assets/core/core.register.js"></script>
 
 <div style="display: flex; flex-direction: column; align-items: center;">
-
+    <script>
+        var iframeList = [], iframe, i;
+    </script>
     <?php
-
     $arFilesItems = glob(__DIR__ . '/*Test.php');
-
-
     foreach ($arFilesItems as $file) {
         $file = basename($file);
         $clName = substr($file, 0, -8);
-        echo "<a href=\"$file\"><b>$clName</b></a>";
-    }
+        //echo "<a href=\"$file\"><b>$clName</b></a>";
+        ?>
+        <script>
 
+            iframe = document.createElement("frame");
+            iframe.src = '<?=$file?>';
+            i = iframeList.push({
+                fileName: '<?=$file?>',
+                clName: '<?=$clName?>',
+                iframe: iframe,
+                // contentWindow: iframe.contentWindow,
+                //document: iframe.contentWindow.document
+            });
+
+
+            // if (iframeDoc.readyState == 'complete') {
+            //     iframeDoc.body.style.backgroundColor = 'green';
+            // }
+            // iframe.onload = function() {
+            //     var iframeDoc2 = iframe.contentWindow.document;
+            //     iframeDoc2.body.style.backgroundColor = 'orange';
+            // }
+        </script>
+        <?
+    }
     ?>
 
+</div>
+
+<script>
+    kit.ready(['Collection', 'flexKit', 'loggerService'], function () {
+
+        window.frameList = new kit.Collection(iframeList);
+
+        frameList.map(function (frameData) {
+            kit.service.logger.notice('<a href="'+frameData.fileName+'">'+frameData.clName+'</a>');
+        });
+
+        kit.service.logger.notice(' ');
+        kit.service.logger.warning('FRAME LIST ...');
+        kit.service.logger.notice(' ');
+
+        console.log(frameList);
+        frameList.map(function (data) {
+            data.iframe.onload = function() {
+                data.kit = data.iframe.contentWindow.kit;
+                //console.log('kit',kit);
+                data.kit.ready([], function () {
+                    setTimeout(function () {
+                        var log = [];
+                        kit.service.logger.info(data.clName);
+                        if(data.kit.service.logger){
+                            log = data.kit.service.logger.collection.map(function (log) {
+                                log.lvl++;
+                                kit.service.logger.__log(log);
+                            });
+                        }
+
+                    }, 1000);
+                });
+            };
+            document.body.appendChild(data.iframe);
+            data.window = data.iframe.contentWindow;
+            data.document = data.iframe.contentWindow.document;
+            data.kit = data.window.kit;
+        })
+    });
+</script>
+<div  class="kit-wrapper">
+    <div class="kit-logger"></div>
 </div>
\ No newline at end of file
diff --git a/tests/kit.CollectionTest.php b/tests/kit.CollectionTest.php
index e18c61b..4a62791 100644
--- a/tests/kit.CollectionTest.php
+++ b/tests/kit.CollectionTest.php
@@ -28,6 +28,7 @@ kit.ready(['collection', 'testing', 'flexKit'], function () {
     unit.logger.info('Коллекции by php collection: Array ( [10] => 10 [1] => 1 )');
     unit.logger.notice(' ');
     unit.logger.info('ARRAY');
+    unit.logger.notice(' ');
     var assertSame = unit.assertSame.bind(unit);
 
 
@@ -231,6 +232,8 @@ kit.ready(['collection', 'testing', 'flexKit'], function () {
     y = x.pluck('age');
     assertSame('20-19-18', y.toArray().join('-'), 'pluck с проверкой сохранения порядка');
 
+
+    assertSame('10', 20, 'Спец ошибка');
 });
 
 </script>