Additionally, CoSMOS is really easy to use (particularly the Beginner client), if you're that desperate to cheat on it.
I'm eagerly awaiting the CH Trainer, as they are always top quality, but using CosMOS, I've set myself up to have a pretty easy time of it in the meantime. 😁
I've only had that happen when trying to edit how much Amrita I have; but I have successfully edited my Defense value, and my health value. The only issue is that the effect doesn't stick between missions, and the same memory point doesn't seem to work in the next mission.
I have no idea if it still works in this game, but I think there was a way around that in the first game at least. I think you had to find the value for amrita, go back to the main menu change it to what you want and then load the game up again. Obviously, this is from the first game but it's worth a try I guess.