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copied!<p>I'm not quite sure what you're asking, but hopefully this'll answer your question -- from the Flex docs:</p> <blockquote> <p><strong>RadioButtonGroup.selection</strong><br>Contains a reference to the currently selected RadioButton control in the group. You can access the property in ActionScript only; <em>it is not settable in MXML</em>. Setting this property to null deselects the currently selected RadioButton control.</p> </blockquote> <p>In general, though, making component references in MXML is totally fine; that's how effects are often handled, among many other things. For example:</p> <pre><code><mx:Glow id="g" /> <mx:Label showEffect="{g}" /> </code></pre> <p>However in your case, assuming you're having trouble setting the selected item, it might be because you haven't specified the <code>group</code> attribute on the radio buttons; omitting that detaches the group component from the individual buttons. Once you add that, you can bind the group's selection property using a <code>Bindable</code> variable containing a reference to a component, like so:</p> <pre><code><mx:Script> <![CDATA[ [Bindable] private var selectedRadioButton:RadioButton; private function this_creationComplete(event:Event):void { selectedRadioButton = rb1; } private function btn_click(event:Event):void { selectedRadioButton = rb2; } ]]> </mx:Script> <mx:VBox> <mx:RadioButtonGroup id="rbg" selection="{selectedRadioButton}" /> <mx:RadioButton id="rb1" group="{rbg}" label="Radio Button 1" /> <mx:RadioButton id="rb2" group="{rbg}" label="Radio Button 2" /> <mx:RadioButton id="rb3" group="{rbg}" label="Radio Button 3" /> <mx:Button label="Choose a Different Button" click="btn_click(event)" /> </mx:VBox> </code></pre> <p>Does this make sense? Hopefully it's not completely off the mark; post back and let me know and I'll try to help out as best I can.</p>

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