Group setting height to size of content, after having it set explicitly

Hi
I have a group like:
<Group id="test" height="100">
<button height="200" />
</Group>
Can I get the group, to have the size of the content, after having set the height explicitly?
Regards
Martin Andersen

It seems that the default is actually 0 as demonstrated in this sample:
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
               xmlns:s="library://ns.adobe.com/flex/spark"
               creationComplete="init()">
    <fx:Script>
        <![CDATA[
            import mx.core.UIComponent;
            import spark.components.Group;
            private function init():void {
                trace((new UIComponent()).height); // prints 0
                trace((new Group()).height); // prints 0
        ]]>
    </fx:Script>
</s:Application>

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Group setting height to size of content, after having it set explicitly

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