[flexcoders] removeChild or delete item in repeater

[urmissinlink]

hey guys,
 I have a nested repeater as seen below

<mx:Repeater id="_rpModule" dataProvider="{A00Module}" >
  <mx:LinkButton id="_mod" label="{_rpModule.currentItem.label}" 
click="openModule(event)" icon="@Embed(source='img/Expand.png')"/>      
  <mx:VBox paddingLeft="35" id="vform">
        <mx:Repeater id="_rpSubModule" dataProvider="{A00SubModule}" 
repeatEnd="populateSub(event);">
           <mx:LinkButton id="_submod" 
label="{_rpSubModule.currentItem.label}"/>
        </mx:Repeater>
  </mx:VBox>
</mx:Repeater>


I am running a loop at the RepeatEnd phase to delete the linkbuttons 
that I don't want, but they are not removing from the screen at all.

here is the code to removeChild

vform[evt.target.instanceIndex].removeChild(_submod
[evt.target.instanceIndex][i]);

What am i doing wrong?

ohh i am in a private function as below

private function populateSub(evt:Event):void{
}


thanks