<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
<mx:VBox>
<mx:ComboBox id="cardType">
<mx:dataProvider>
<mx:ArrayCollection>
<mx:Array>
<mx:String>American Express</mx:String>
<mx:String>MasterCard</mx:String>
<mx:String>Visa</mx:String>
</mx:Array>
</mx:ArrayCollection>
</mx:dataProvider>
</mx:ComboBox>
<mx:TextInput id="cardNumber" />
<mx:Button click="trace(validator.validate( ))" />
</mx:VBox>
<mx:CreditCardValidator id="validator"
cardNumberSource="{cardNumber}"
cardNumberProperty="text"
cardTypeSource="{cardType}"
cardTypeProperty="value" />
</mx:Application>
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