[Connect update 6 NET API c#] PolyfaceHeader normals.

publicIEnumerable<int> NormalIndex { get; }

always return zero.

            DgnModel model = Session.Instance.GetActiveDgnModel();

            Element elem = model.FindElementById(mesh_id);

            if (elem.ElementType != MSElementType.MeshHeader) return list;

            MeshHeaderElement mesh = (MeshHeaderElement)model.FindElementById(mesh_id);
            PolyfaceHeader polyface = mesh.GetMeshData();




            IEnumerable<DVector3d> vi = polyface.Normal;
            IEnumerable<int> pi = polyface.NormalIndex;

Any ideas?

regadrs

Nenad