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Create Cursor for array

<?xml version="1.0"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"     initialize="initData();">     <mx:Script>                  import mx.collections.*;         public var myArray:Array = [{label:"A", data:"1"},                                     {label:"B", data:"2"},                                      {label:"C", data:"3"}];         [Bindable]         public var myAC:ArrayCollection;         public var myCursor:IViewCursor;                  public function initData():void {             myAC = new ArrayCollection(myArray);         }         public function testCollection():void {             data.myCursor=myAC.createCursor();             ta1.text="cursor is at: " + myCursor.current.label;             var removedItem:String=String(myCursor.remove());             ta1.text+="cursor is at: " + myCursor.current.label;         }            </mx:Script>     <mx:ComboBox id="myCB" rowCount="7" dataProvider="{myAC}" />     <mx:TextArea id="ta1" height="75" width="350" />     <mx:Button label="run test" click="testCollection();" /> </mx:Application>