flex 4 날짜를 클릭하면 화면전환해서 출력하기(statement추가)

statetest.xml
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
 <mx:states>
  <mx:State name="state2">
   <mx:RemoveChild target="{datechooser1}"/>
   <mx:AddChild relativeTo="{panel1}" position="lastChild">
    <mx:Text id="state2text" text="Text" width="105" horizontalCenter="24" verticalCenter="-10" textAlign="center"/>
   </mx:AddChild>
   <mx:AddChild relativeTo="{panel1}" position="lastChild">
    <mx:Button label="go home" horizontalCenter="0" verticalCenter="18" id="bt_home" borderColor="#FFFFFF" click="currentState=''" fillAlphas="[1.0, 1.0]" fillColors="[#42FF00, #5AFF00, #BFEEA0, #E7FFCD]" themeColor="#FFFFFF"/>
   </mx:AddChild>
   <mx:AddChild relativeTo="{panel1}" position="lastChild">
    <mx:Text x="49" y="89" text="오늘은"/>
   </mx:AddChild>
  </mx:State>
 </mx:states>
 <mx:Script>
  <![CDATA[
   import mx.controls.Alert;
   import mx.controls.DateChooser;
   function changed(event:Event):void{
    var date:DateChooser = DateChooser(event.currentTarget);
    
    var timeString:String = String(date.selectedDate.getFullYear())+"년";
    timeString += " "+String(date.selectedDate.getMonth()+1)+"월";
    timeString += " "+String(date.selectedDate.getDate())+"일";
    
    currentState = "state2";
    state2text.text = timeString;
    //Alert.show(timeString);
   }
  ]]>
 </mx:Script>
 <mx:Panel width="250" height="256" layout="absolute" horizontalCenter="0" verticalCenter="0" title="state test" id="panel1">
  <mx:DateChooser horizontalCenter="0" verticalCenter="0" change="changed(event)" id="datechooser1"/>
 </mx:Panel>
</mx:Application>