I noticed this as well, though it's a little picky. It's not all too hard to get the timing right but if you're off with it and hit it too late or too early, at least for me, then it won't work at all. It was good to find out, but when I have time today I am going to try Neo787's solution.
Since Neo hasn't really explained what he's doing, I guess this will have to suffice for now.
* Updated game trainers and cheats daily
* Get notified when new cheats are added
* Request which games get new trainers
* Priority support with any problem
• Unlimited Complexity
• Cell Stage Health
+ 14 more options