Accessing root variables from a class file

1

I have a Movie clip class named MY_MC,
and would like to access to root level variable.

fla timeline


var Status:String = "ok";

MY_MC.as



package{
	
	import flash.display.MovieClip;
	import flash.events.Event;
	import flash.events.MouseEvent;
	
	public class MY_MC extends MovieClip {
		
		public function MY_MC() {
			
			trace(Status); // here I am trying to access.
			this.addEventListener(MouseEvent.MOUSE_OVER,lampOn);
				
		}
		
		private function lampOn(e:MouseEvent):void
		{
		trace("OVER");
		}
	}
}

How Can I do this?

Thank you.