Did you already buy the game on GOG so you can test for us or wondering before you spend the money and the cheats don't work on it?
The only version that's supported is the Steam version of the game. You will have to put in a platform request for GoG to be supported
To submit a request for a new distribution platform, please use our trainer requests system. Once at least 5 people request the same distribution, it will be available for funding. Please do NOT use the trainer option request system to request new platforms as they will be denied. Premium members at any level may request a new distribution as long as it’s done through the normal request system.