R.A.C.E - 2 billion currencies 1.1.64

Instructions in script 

Load & find edited values 

See images for visual locations of hacks 

Another way of hacking gems 

once at 2 billion, upgrade & refine 

Long press value result to

Go to address of result 

under highlighted # edit gems value 0 to 2,000,000,000 ,edit no more then 5

Might take a few tries , the game will crash & restarting game gems will change