I believe cheat engine codes are safe, they get your account suspend with your EXP points you earn from the instant upgrade via hex codes/cheat engine.
so i believe if you made it nicely lets say:
-first day upgrade 1/4 of buildings to level 4 let the rest at Lv.3
-next day try to get the half to level 5 and let the rest level 4
-and do the same steps to prevent your self to get high EXP point. i know would take a while but its prevent the suspend 99%
*I've been playing warcommander since a year or so.. i got many working glitches still not patched:
-Fast repair toons, too easy idk how they still dont figure it out.
-Copy toons, Example: 6 megas copy to 10 toons.. long steps but working.
-Aircraft repair, it wont work in my new account.. i guess Level 10 airfield needed.
-Instant upgrade CC from Level 1 to 6 (without cheat engine) a Glitch, getting suspend sometimes because what i say in the first post (earning so much EXP points).
-Some special glitches about attack toons/base, cant say in public because its too easy to get it.
All i want to say its a flash-game, everything is possible.. peace out!