Some Steam Final Fantasy games doesn't work

It seems that cheats don’t work on some Final Fantasy games on Steam. This is not good at all. Does anyone already have a solution for this? Some games like Final Fantasy VII, Final Fantasy VIII, Final Fantasy IX, Final Fantasy XIII.


@Groonth Many of the FF games seem to need different menus and aspects of the game opened or used before initializing the cheat. For instance, enter and complete 1 fight before using combat cheats. Others, like “Save Anywhere in FFIX” Need to be turned on, used and turned off immediately. They all work, to one extent or the other, but it takes tinkering to do. Also, if one does break after it was working. Turn all off, save and restart the game and go again. I had to do that with FFVIII every hour of so.