<?xml version="1.0"?>
<s:VGroup xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" paddingTop="20" paddingLeft="20" paddingRight="20">

  <fx:Declarations>
    <s:RadioButtonGroup id="rbg"/>
  </fx:Declarations>

  <s:RadioButton label="YES" groupName="rbg"/>
  <s:RadioButton label="NO" groupName="rbg"/>

  <s:Label text="You selected: {rbg.selectedValue}"/>

</s:VGroup>