Define Label and value separately for ComboBox data binding

       
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
    <mx:VBox>
        <mx:Script>
            
    
                private var htmlStr1:String = '<b>Header</b>';
                private var textStr1:String = "this is a test";
    
                private function setNewText():void
                {
                    determineTextType(changeText.selectedItem.value.toString());
                }
    
                private function determineTextType(str:String):void
                {
                    var regexp:RegExp = /<.+\w.>/;
                    textArea.text = String(regexp.test(str));
                }
    
          
        </mx:Script>
        <mx:ComboBox id="changeText" dataProvider="{
                    [{label:'HTML1', value:htmlStr1},
                     {label:'Text1', value:textStr1}]}" change="setNewText()"/>
        <mx:TextArea id="textArea" height="100%"/>
    </mx:VBox>
</mx:Application>

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Define Label and value separately for ComboBox data binding : ComboBox Data « Components « Flex

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