Hi, the built in codes won't work because the memory address will change depending on your version of the game (not just US vs EU but also the internal version of the game/rip, there is the 1.0, 1.1 and 1.2 variants) and if you're playing in 4:3 or 16:9 aspect ratio.
Sadly I wasn't able to get a comprehensive list of all the variants, first determine which version do you have (the game version would be the most difficult to ascertain) and then try to find codes for that version.