<?xml version="1.0"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"> <mx:XML id="myData"> <root> <contacts> <item name="AAA" zipcode="953763233" /> </contacts> </root> </mx:XML> <mx:ZipCodeFormatter id="fmtZip" formatString="#####-####" /> <mx:Label text="Zip Code {fmtZip.format(myData.contacts.item.@zipcode)}" /> </mx:Application>