Action Replay for Nintendo D.S. and Pokemon Diamond?

I just bought Action Replay for my Nintendo D.S. and I'm using it on Pokemon Diamond. It's working very well except that some of the "cheats" aren't really working. I used the walk anywhere cheat and super XP gain cheat, and they both work very well. But when I selected the Master Ball and... show more I just bought Action Replay for my Nintendo D.S. and I'm using it on Pokemon Diamond. It's working very well except that some of the "cheats" aren't really working. I used the walk anywhere cheat and super XP gain cheat, and they both work very well. But when I selected the Master Ball and Rare Candy cheats, the the Master Balls and Rare Candies don't show up in my backpack. Why is this? Do I need to get to a certain point in the game for some of the cheats and hacks to work?
3 answers 3