Cheat Engine

[ta_trainer]

Hi

there is a game called company of heroes that I would like to hack
and there is a cheatmod for it with cool cheats

of course u can not use the mod in online game
when u check the mod, it contains so many function calls to game APIs

is it possible to modify the APIs or call them externally
for example, there is a FOW cheat that calls FOW_RevealALL funtion in the game to remove FOW

how can I modify or call this in game without using the mod
has this been done in any other game?