Help Forza Motorsport 4

i need help modding forza 4 i do the whole thing save it go back in and nothing happened goes back to way it was before on 360 rev like make money 100,000,000 goes back down to 5 mil after i save it any help plz??

 

did you save the changes after modding?

 

i did everything i have modded it a bit so i know and these last times it wouldnt work