It sounds like you're referring to an article about using Cheat Engine to modify the game XCOM 2. For those who might not know, Cheat Engine is a tool that allows users to modify the memory values of a game, effectively creating cheats or modifications to gameplay.
However, a quick Google search reveals fragmented forum posts from 2016. Most guides say “Scan for the value, change it, done.” They never explain the installation of the table or how to handle the game’s anti-cheat memory scrambling. xcom 2 cheat engine supplies value install
Pro tip: Sometimes you’ll find two addresses that update together. One is often the display value, the other is the real value. Modify the lower one in the list first. It sounds like you're referring to an article