Ok I gave another chance and was working well to me. Nothing about luck just find the right number. I did that technic 3 times, got myself 500.000 gems. On time I got a resync error Wich means I changed a wrong number and I might get banned soon.
So I will keep my 500k, and try to play normally.
If you wanna try what I've done is :
-Search for gold and gem value (50000;1500)
-Refine to only gem (1500)
-add some gems from a quest
-then you got only 3 values (1500 AND the new gem value)
-change the 3 values to the one you want (my case was 500.000)
-go to the quest land (don't need to do the quest)
-restart game. And you got the gems
Don't add to much in one time, I tried 2M and got resync
Enjoy!!