[Closed] File Notification Codes work incorrect [C++]

Hello! In 3ds Max 2018 File Notification Codes like POST_OPEN_FILE, POST_OPEN_FILE_PROCESS, POST_OPEN_FILE_PROCESS_FINALIZED work correctly. When scene is loaded, my process starts work like i want. But i stuck in 3ds Max 2020. In my code there is callback on POST_OPEN_FILE_PROCESS and while scene opening my code starts work (should when scene load ends), but some objects in scene still not loaded. As result, some methods in my code can’t get object’s params and 3ds max crashes. I try a lot of this codes.