hunting sniper, help

[Taim7]

Name of Game: hunting sniper

Link: https://play.google.com/store/apps/details?id=com.europe.huntingsniper

What cheats: money, gems, medals, score(ingame)

Have you tried cheating this game? Yes I tried to hack coins and gems and score and boxes all of them reversed at some point, but the weird thing is that some values stay until restarted, for example i tried using group search to value to buy bullets and changed it to negtive number which worked and i could buy stuff with my gems but when i go into a game all my gems and stuff bought restart(i think they are serversided but i never seen this type of change)