Create a Bidirectional Binding

            

<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="vertical">

    <mx:VBox xmlns:mx="http://www.adobe.com/2006/mxml">
        <mx:Label text="From Input 2:" />
        <mx:TextInput id="input1" text="{input2.text}" />
        <mx:HRule />
        <mx:Label text="From Input 1:" />
        <mx:TextInput id="input2" text="{input1.text}" />
    
    </mx:VBox>
</mx:Application>

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Create a Bidirectional Binding : Data Binding « Data Model « Flex

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