How do you use cheat engine in plantvszombie game

The only type of thing you can do there is use cheat engine for infinite sun.
First of all you must start a mission or survival.
Choose the plants you want.
When the game starts you must make cheat engine search for the value 50.
Then you will have 50 sun at the start put in a plant worth 50/25.
Last of all you will have to search the remaining sun you have and you will see a value of the sun you have change both values to 999 and freeze it.