override protected void _lockService_AddItem(UserIdentity userIdentity, ObjectKey key, LockingInfo value) { PresentationKey presentationKey = GetPresentationKey(key); if (presentationKey == null) return; if (key.GetObjectType() == ObjectType.Presentation) _globalNotifier.Notify(userIdentity, this, "ObjectLocked", value); else { _presentationNotifier.Notify(userIdentity, presentationKey, "ObjectLocked", value); } //_presentationNotifier.SubscribeForMonitor(presentationKey, value.UserIdentity); }