<mx:VBox xmlns:mx="http://www.adobe.com/2006/mxml" >
	<mx:Script>
	<![CDATA[
	import mx.controls.TextInput;
	import 	mx.validators.PhoneNumberValidator;
	import mx.managers.SystemManager;
	
	]]>
	</mx:Script>
	
	<mx:TextInput id="ti1" />
	<mx:PhoneNumberValidator id="myPhN" source="{ti1}" minDigits="10" />	
	<mx:Button id="bt" />
</mx:VBox>