Edit workshop addons on my server

Hello guys,

I have a garrys mod TTT - Server and use a bunch of addons there. For example a simple weapon and i want to change the dmg of it. How can I do that? I add my addons with the Collection ID.

I tried to setup FastDL but it doesnt work for me, maybe i just fail something idk.

So is there a way to edit the lua files and still use the "workshop id" method?

Thank you for your help