public static void GetInstanceGeometry(GeometryObject obj, Dictionary<int,Face> areas){
						
			GeometryInstance instance = obj as GeometryInstance;
				if (null != instance)
			      {
			         GeometryElement instanceGeometryElement = instance.GetInstanceGeometry();
			         foreach (GeometryObject instanceObj in instanceGeometryElement){
			         	Solid instanceGeomSolid = instanceObj as Solid;	
			         	if (null != instanceGeomSolid){
			         		foreach (Face geomFace in instanceGeomSolid.Faces) {
			         									try{
							areas.Add((int)geomFace.Area, geomFace);	
						}
						catch{
//							TaskDialog.Show("Result", "Solid geometry not found");
						}
			         		}
			         		}

			         	}
		
			     }//close object array

		}//close method