You need LuaCS !!!
Make sure you subscribed correctly to LuaCS and have CORRECTLY added the startup command line for barotrauma :
If you don't use the command line, you wont be up to date and the mod (and other that need LUACS) will stop working.

I recommend you read the workshop page of LuaCS and follow the installation process.

After subscribing and updating LuaCS and toomanybaro, you'll need to activate Cs mods in the main menu of LuaCS in barotrauma. Then you can push the mod to the activated list of mods.

If you followed everything and it doesn't work, feel free to leave a comment, but they are a few thing that might explains it :

• You did not follow the steps correctly
  
• There is/was a new update of Barotrauma and the mod is not up to date, you'll get either a crash and or message in the console telling you that, leave a comment i'll update it !
  
• There could be a mod incompability messings things up, it's extremely unlikely, but leave a comment we''ll check that out !
  
• You did not follow the steps correctly