Game Guardian works just like Cheat Engine on PC. Starting with 0 donuts will not help you find the proper strings. with money and XP, however it is easier. Just search for how much money you have at that time and let it do it's full search. Then, when it finds those however many results, go back to the game and collect from one house. Get all the money from the house and then search for the next value. Usually when I do money with GG, I end up with 4 remaining strings of code, change all four and then you'll have all the money you need/want. Same should go for XP
