<?xml version="1.0" encoding="utf-8"?>

<mx:Canvas xmlns:mx="http://www.adobe.com/2006/mxml">

    <mx:Model id="statesModel" source="data/states.xml"/>

    <mx:Script>
        [Bindable]
        public var selectedItem:Object = {};
    </mx:Script>

    <mx:ComboBox dataProvider="{statesModel.state}" labelField="name" width="{this.width}"
        change="this.selectedItem = ComboBox(event.target).selectedItem" prompt="Choose a state..."/>

</mx:Canvas>