FireWeapon address

Hello, I can't find the address of FireWeapon function posted by SystemFiles in 2013.. I logged all the virtual methods of CPlayerClnt and tried all of those who has the same amount of parameters and in result I mainly crashed the game with those tries. i tried to cut the pattern until it started match something, I got like 5-6 functions which starts with sub esp, 20, but none of those works either.

Anyone? -----------------------------------------------