public void InitGUID(IntPtr matHandle) { try { IAnimatable mat = Loader.Global.Animatable.GetAnimByHandle((UIntPtr)(int)matHandle); Guid uid = Guid.NewGuid(); Tools.SetMaterialProperty((IMtl)mat, "guid", uid.ToString()); } catch (System.Exception ex) { Autodesk.Max.GlobalInterface.Instance.TheListener.EditStream.Printf(ex.Message); } }