For a few days now I have wanted to make a practice beatmap pack in mania which contains maps from other mappers but with a change of speed, I have seen that other people have the same thing so I wanted to do it but when I wanted to upload the practice beatmap pack I It says that the map I want to upload is not mine, how can I fix that? It should be noted that I have put the author's name in the difficulty of the map to avoid inconveniences and not take over what is mine, the only thing I want is to have a practice beatmpack so I can play it with my friends.