Use mcreator new feature to replace all of something in the biome with something else?

Basically lets say I want to change all stone to air in the entire biome

Or all diorite or deepslate to new custom block

Feature thing is kinda confusing & doesn't explain how to replace all. 

Appreciate any help you give, thanks. 


I don't want to use syructureblocks as it fails & is extremely laggy.