actionscript 3 - Itemrender of DataGroup won't release memory - flex(Adobe air) -

i have datagroup compoenent in adobe air application , have used custom itemrenderer in it, attached source code of itemrenderer attached profiling of it,

question: when come other module module have datagroup @ time again create objects itemrender , previous object of itemrender wont released.

if have idea, please suggest me

<?xml version="1.0" encoding="utf-8"?> <s:itemrenderer xmlns:fx="http://ns.adobe.com/mxml/2009"                 xmlns:s="library://ns.adobe.com/flex/spark"                 xmlns:mx="library://ns.adobe.com/flex/mx"                 autodrawbackground="false"                 buttonmode="true"                 click="clickhandler(event)"                 mousechildren="false"                 rollout="rollouthandler(event)"                 rollover="rolloverhandler(event)"                 removedfromstage="itemrenderer1_removedfromstagehandler(event)"                 creationcomplete="itemrenderer1_creationcompletehandler(event)">     <fx:script>         <![cdata[             import cox.xxxxxxxxxxxxxxx.event.thumbevent;              import mx.events.flexevent;              protected function image_completehandler(event:event):void             {                 consoleutils.logit(" thumbimage.mxml :image_completehandler - ");                 image.removeeventlistener(event.complete, image_completehandler);                 fadein.target=image;                 fadein.play();             }              protected function clickhandler(event:mouseevent):void             {                 owner.dispatchevent(new thumbevent("itemclick", data, itemindex));             }              protected function rolloverhandler(event:mouseevent):void             {                 owner.dispatchevent(new thumbevent("itemrollover", data, itemindex));             }              protected function rollouthandler(event:mouseevent):void             {                 owner.dispatchevent(new thumbevent("itemrollout", data, itemindex));             }              protected function itemrenderer1_removedfromstagehandler(event:event):void             {                 this.removeeventlistener(event.removed_from_stage, itemrenderer1_removedfromstagehandler);                 this.removeeventlistener(mouseevent.roll_out, rollouthandler);                 this.removeeventlistener(mouseevent.roll_over, rolloverhandler);                 this.removeeventlistener(mouseevent.click, clickhandler);                  this.removeallelements();             }              protected function itemrenderer1_creationcompletehandler(event:flexevent):void             {                 this.removeeventlistener(flexevent.creation_complete, itemrenderer1_creationcompletehandler);                 image.source="test.png";                 //image.addeventlistener(event.complete, image_completehandler);             }          ]]>     </fx:script>     <fx:declarations>         <s:fade id="fadein"                 alphafrom="0"                 alphato="1"/>     </fx:declarations>      <s:bitmapimage id="image"                     horizontalalign="center"                    smooth="true"                    smoothingquality="high"                    verticalalign="middle"/>     </s:itemrenderer> 

snapshot of profiling

as can see, in profile, have 21 orphan objects won't recyle , profiling shows me @ saved @ line no 12 while line no 12 creation_complete event , have removed it.

thanks in advance

i have used datagroup parent component , have define above itemrenderer in itemrenderer property of datagroup, , in dispose function have define datagroup.itemrenderer null in datagroup. eligible gc. , see no instance of itemrenderer in memory.