R_fullbright 1 unlocker

Hello i want a r_fullbright 1 unlocker since it helps my fps alots, i play promod so i need something working on it
i tried to replace r to j in iw3mp but didn't work.

hope someone can solve this and thank you.

Wouldn't it be better to just have a cheat protected "cvar" unlocker so that all cheat protected cvar commands are unlocked? :P