Fx - Problem accessing stage - property undefined

What am I doing wrong in the code below? I just want to stick a label to the stage.

I know I can <mx:label text=“hello world”> but I want/need to use this method because I have an AS class that needs a stage reference.


<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
    
    <mx:Script>
        <![CDATA[
            import mx.controls.Label;
            
            private static var labeltje:Label = new Label();
            labeltje.text = "Hello World";
            
            stage.addChild(labeltje);
            
        ]]>
    </mx:Script>
    
</mx:Application>

1120: Access of undefined property stage