Panel Title 부분에 CheckBox 추가 하기

<?xml version="1.0" encoding="utf-8"?>
<mx:Panel xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" width="100%"
cornerRadius="10"
  creationComplete="addCheckBox()"
  >

 <mx:Script>
  <![CDATA[

   import mx.controls.Alert;
   import mx.controls.CheckBox;
    

   /** 타이틀위에 체크박스 붙이기 **/
   private function addCheckBox():void {
    var checkBox:CheckBox = new CheckBox();
    checkBox.x = (this.titleBar.width - checkBox.width)-10;
    checkBox.y = (this.titleBar.height - checkBox.height) / 2;
    checkBox.addEventListener(Event.CHANGE, checkBoxChangeEvent);
    this.titleBar.addChild(checkBox);
   }
   
   public function checkBoxChangeEvent(event:Event):void {
    Alert.show("변경");
   }
  ]]>
 </mx:Script>
 
</mx:Panel>

위치는 마음대로.. ㅡ.ㅡ;;