<?xml version="1.0"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
<mx:Script>
import mx.controls.Alert;
public function calculateChildren():void {
var myText:String = new String();
myText= myVBox.numChildren + " children";
myText+="\nThe Application has " + numChildren + " children";
Alert.show(myText);
}
</mx:Script>
<mx:VBox id="myVBox" borderStyle="solid">
<mx:Label text="This is label 1" />
<mx:Label text="This is label 2" />
<mx:Label text="This is label 3" />
</mx:VBox>
<mx:Button label="Show Children" click="calculateChildren();" />
</mx:Application>
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