Garry's Mod

Garry's Mod

ULTRAKILL ARMS
Feedbacker parry problems
So I'm using the Bootleg ULTRAKILL SWEPS mod, with the Core Eject Jackhammer. I try to parry it with Feedbacker, it works, but I take 50 damage when I parry.
I was able to disable the taking damage part, but when I booted up the game again after closing, no matter what I did (the console with "feedbacker_parrydamage 0", which is what also worked before), it wouldn't let me remove the damage when parrying.
Does anyone else have this problem, and if so is there a fix?