Disable money gain

I was trying to make a Battle System similar to Battle Tower, I deactived the Exp gain and the Item using with this code before each script:

But I added this to the Gain Money section (arround line 3500), but the player keeps receiving money after the battle.

Am I doing something wrong?

Between lines 3500 and 3550 you need to change the three '@internalbattle' to '@internalbattle && !$game_switches[38]'.