Hey!

I have a problem with shadows in papervision 3d. Im not strong in programing but im trying to do this game that needs it. Anyway i struck at a wall now with shadows. There are a couple of examples on the web, thing is I dont understand them too well and dont know what im doing wrong. I made this little example:

Code:
package 
{
        import shadowcaster.*;	
        import flash.display.Graphics;	
	import flash.display.MovieClip;	
	import com.greensock.TweenMax;
	import flash.display.BlendMode;
	import flash.filters.BlurFilter;
	import org.papervision3d.lights.PointLight3D;
	import org.papervision3d.materials.ColorMaterial;
	import org.papervision3d.materials.shadematerials.FlatShadeMaterial;
	import org.papervision3d.materials.utils.MaterialsList;
	import org.papervision3d.materials.WireframeMaterial;
	import org.papervision3d.objects.primitives.Cube;
	import org.papervision3d.objects.primitives.Plane;
	import org.papervision3d.view.BasicView;
	import flash.display.Stage;
	import org.papervision3d.materials.MovieMaterial;
	
	public class shadow extends BasicView
	{		
		protected var cube:Cube;		
		protected var mat:FlatShadeMaterial;
		protected var mat2:FlatShadeMaterial;
		protected var plane:Plane;
		var shadowCaster:ShadowCaster = new ShadowCaster("shadow1",0x000000,BlendMode.NORMAL,1);
		var luch = new PointLight3D  ;
		private var mMat:MovieMaterial;
		private var koza:MovieClip = new MovieClip  ;
		public function shadow():void
		{
			super();
			init();
		}
		protected function init():void
		{
			createChildren();
			commitProperties();
			startRendering();
		}
		protected function createChildren():void
		{
			var koza:MovieClip = new MovieClip;
			koza.graphics.beginFill(0xefefef);
			koza.graphics.drawRect(0,0,3000,3000);
			koza.graphics.endFill();

			mMat = new MovieMaterial(koza,false,false,true);
			mat = new FlatShadeMaterial(luch,0xFFFFFF,0x469942);
			
			plane = new Plane(mMat,3000,3000,10,10);

			cube = new Cube(new MaterialsList({all:mat}),200,200,200);
			cube.x = 0;
			cube.y = 200;

			luch.x = 0;
			luch.y = 700;

			scene.addChild(plane);
			scene.addChild(cube);

			shadowCaster.setType(ShadowCaster.DIRECTIONAL);
			shadowCaster.castModel(cube,luch,plane,false,false);
			
		}
		protected function commitProperties():void
		{
			//Set properties of our plane
			plane.material.doubleSided = true;
			plane.pitch(90);
			plane.y = -100;
			cube.y = 400;
			cube.x = -500;
			TweenMax.to(cube,5,{x:1000});
			camera.x = 200;
			camera.z = 1500;
			camera.y = 1000;
		}
	}
}
Is there anybody who would wave their magic wand and solve my problem?
thx