Where the hell is the module file of a mod downloaded from steam workshop?

So I got Diplomacy from the steam workshop but I now want to edit the module with TweakMB and I can't find it anywhere. I only have the mod folders for the mods I downloaded from internet myself :( Any help?

Submitted April 29, 2017 at 10:05AM by CASCAI http://ift.tt/2oJ8hh9