TTT game-mode problem

Evening everyone! I’m having a bit of a problem with a new server i’m trying to start and was wondering if someone might have an idea what i’m doing wrong.

So, Garrysmod server’s now come with TTT (terrortown) already installed along with sandbox and base.
I’m having some trouble with TTT not being the default game-mode on the server. Inside the command-line editor i have tried +sv_defaultgamemode terrortown & gamemode “terrortown” and either load TTT onto the server.

If anyone has any idea on how to fix this, please let me know.

Thank you.

+gamemode “terrortown”

…it worked…i quit…