Gold mod it's work but it causes the value cash to decrease (-1999999 you can see on history gold transaction)not increase & when exchange to cash system count as -1999999 even visual 999999
So, in the system cash became -999999 even in the visual is 999999(try development a game & the secretary mentioned cash is red Wich is -999999) in the end is gold mod & cash mod is useless.
This is just my opinion, maybe I'm wrong or too stupid because I don't know how to use it.
Sorry if you don't understand/confused.