How to make a trainer?

Hello! I am looking to make a trainer for the game Watch_Dogs .

i did the basic try statement

try
writeinteger("Watch_Dogs", &HAdressThing, NUMBER)


and that works fine and well, but when I restart Watch Dogs, of course the value of the address changes. What can I do about this?

I want a trainer that works even after you restart your game. Please help me! Thank you, Greg

what kind of game is that ? isn't lan game ?