Access of possibly undefined property weight through a reference with static type

[sospamom]

package code{
	
	import flash.display.*;
	import flash.events.*;
	import flash.ui.*;
	import flash.geom.*;
	
	public class Document extends Sprite{
		private var title:Title = new Title();
		private var body:Body = new Body();
		private var count:int=0;
		public function Document()
		{
					
			addChild(title);
			addChild(body);
						
			body.addEventListener(Event.ADDED_TO_STAGE, addedToStageListener);
			title.addEventListener(Event.ADDED_TO_STAGE, addedToStageListener2);
			
		}
		private function addedToStageListener(e:Event):void	{
			
			count++;
			test();
		}
		private function addedToStageListener2(e:Event):void	{
			
			count++;
			test();
		}
		private function test()
		{
			if (count == 2)
			{
				body.x = title.weight;
			}
		
		}
		
	}
}

Выдает ошибку:
Access of possibly undefined property weight through a reference with static type code:Title