Using functions that take bindable properties as arguments
<?xml version="1.0"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"> <mx:CurrencyFormatter id="usdFormatter" precision="2" currencySymbol="$" alignSymbol="left" /> <mx:TextInput id="myTI" text="Enter number here" /> <mx:TextArea text="{usdFormatter.format(myTI.text)}" /> </mx:Application>