Trying to modify a mod

I’ve downloaded the smash n grab mod, extracted the folders inside it (database and resources). I copied and pasted database and resources to a folder called MyMod inside: C:\Program Files (x86)\Steam\steamapps\common\Grim Dawn\mods\MyMod

Inside MyMod folder I opened with a text editor the file “playerlevel.dbr” inside the path “mods\MyMod\database\records\creatures\pc” and changed the experience gained and skill points gained.

After that I opened AssestManager.exe and in Tools I clicked in Extract game files in the default path (grimdawn folder inside steam folder). Still in AssestManager I selected MyMod and pressed F7 to build and when asked, I did replace the files (I also tried not replacing it).

I went to test the mod, but the level goes to 100 after killing one mob and the skill points are also wrong. How do I change things correctly? Thanks