Flex中如何隐藏一个组件

<?xml version="1.0" encoding="utf-8"?>
<mx:Application
     xmlns:mx="http://www.adobe.com/2006/mxml"
     layout="vertical">
      
     <mx:Button label="hide text"
          click="myText.visible=false;
          myText.includeInLayout=false;" />
     <mx:Text id="myText" text="hello,
     this text will be hidden or shown,
     depending on the buttons" />
     <mx:Button label="show text"
          click="myText.visible=true;
          myText.includeInLayout=true;" />
</mx:Application>