How to put formitems in viewstack in flex?

Question

How to put form items in view stack in flex?, so that i can get selected form item through one comboBox

Answer 1

<mx:ComboBox id="cb">
    <mx:dataProvider>
     <mx:Array>
      <mx:String>Label-1</mx:String>
      <mx:String>Label-2</mx:String>
      <mx:String>Label-3</mx:String>
     </mx:Array>
    </mx:dataProvider>
</mx:ComboBox>

<mx:ViewStack id="vs" selectedIndex="{cb.selectedIndex}">
    <mx:FormItem label="Label-1">
     <mx:TextInput/>
    </mx:FormItem>
    <mx:FormItem label="Label-2">
     <mx:TextInput/>
    </mx:FormItem>
    <mx:FormItem label="Label-3">
     <mx:TextInput/>
    </mx:FormItem>
</mx:ViewStack>