<?xml version="1.0"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"> <mx:Form id="identityForm"> <mx:FormItem id="ssnItem" label="Social Security Number"> <mx:TextInput id="ssnField" /> </mx:FormItem> </mx:Form> <mx:SocialSecurityValidator id="ssV" source="{ssnField}" property="text" /> </mx:Application>