[flexcoders] Wipe Effect

[[EMAIL PROTECTED]]

I have this box which I want to wipe left to hide  and then wipe right 
to show.
It hides all right and then it called the effectEndHandler, but 
mainImgBox.visible = true; does not do anything. There is no wipe right 
and the box does not appear. what am I doing wrong ?
          


 <mx:VBox id="mainImgBox"  hideEffect="{wipeLeft}" showEffect="{wipeRight}">
            <mx:Image id="mainImg" 
source="@Embed(source='../media/jbh.jpg')"
             />
        </mx:VBox>
      
<mx:WipeLeft id="wipeLeft" duration="1000" 
effectEnd="effectEndHandler()" />     
     <mx:WipeRight id="wipeRight" duration="1000"/>
   
private function effectEndHandler():void {
                         
                mainImgBox.visible = true;
            }