Cant you create meshes these days? I am trying to make a meteor mesh that looks crumpled and rough. I see people that have mesh's that looks too hard to make with bricks but roblox said you cant meshes anymore so how do they do it?
This isn't a scripting question. Anyways though the answer for your question is no. You cannot upload your own meshes at the moment. People use importing scripts to import obj files to create bricks that follow with the nodes of the obj file. I don't know much about it but that's what I've observed from other people's places.
I know how to do this whole obj thing... there is a thing called obj built in library or something like that, then you look for were it says (Workspace) I think... then in the last script should be somewhere at the end where you insert the code. so to get the code you must create a mesh then export it as obj then when you saved the file, open it as a notepad, press ctrl+A then when it's all selected just press ctrl+C then go to where you must insert the code in the script and press ctrl+V then exit out of the script and then press Play/Run (I get mixed up) then slowly the bricks will be creating you model... hope I helped