Using the CurrencyValidator to validate US currency
<?xml version="1.0"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"> <mx:CurrencyValidator id="usV" source="{priceUS}" property="text" alignSymbol="left" trigger="{valButton}" triggerEvent="click" /> <mx:Label text="Enter a US-formatted price:" /> <mx:TextInput id="priceUS" /> <mx:Button id="valButton" label="Validate Currencies" /> </mx:Application>