Possible hack with cheat engine?

I wonder if you do the typical method for example,

search 0, then get 1 skill pts in defence map, search 1, get 2 pts, search 2, etc... then change value to 20 (max skill) and freeze to have unlimited air strikes, could this work?

Thank you

If you use cheat engine, the game will crash fastly.. I tried it and I got also bann

ok thanksssss