Animal Crossing Wild World Cheats Not Working On Acekard 2i

I have downloaded animal crossing wild world to my acekard 2i, the game works fine but the cheats do not work, ive tried multiple versions of the game, even the European version, but to no avail...do the cheats just not work? am I doing something wrong? is there something I can do? I have not had this problem with any other game...

When you are adding the cheats, do you press Select to build the cheat list.They should work then.

yea, I always make sure to build the list
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any other ideas?