<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="vertical" verticalAlign="middle" backgroundColor="white" viewSourceURL="srcview/index.html">

	<mx:XML id="dp" source="countries_states.xml" format="e4x" />

	<mx:Form>
		<mx:FormItem label="Country:">
			<mx:ComboBox id="countryCB" dataProvider="{dp.country}" labelField="@name" />
		</mx:FormItem>
		<mx:FormItem label="State:">
			<mx:ComboBox id="stateCB" dataProvider="{countryCB.selectedItem.state}" />
		</mx:FormItem>
	</mx:Form>

</mx:Application>