you can add infinity coins, and crystals with game guardian i am triyng to change the hearts but i didn´t find it yet
you just need to do this
open gameguardian and do fuzzy search then move something or do something that do not change de value of the coins and do fuzzy search equal, than spend some coins and do fuzzy equal do this until you get only 5 or 8 result the result is a large number
if it helps my adresses are
money 0x53C8F100
crystal 0x53C8F148
you can see here the result h**p://imageshack.us/f/849/20121215145916.png/ i abused a litle on the crystals =D