Essentials: Location of player balance config files?

[CrikNJW]

Information

Full output of /ess version:

Server log:

EssentialsX config

Help request

Problem

I would like to know where i can find and edit the player balance config files, i have searched high and low for it but i cannot find it at all. I would also like to be able to edit the player balance to negative values.(Not using /economy command)
What I have tried

I have looked in FTP File Access as well as all EssentialsX related config files (including Vault).
Screenshots

[Radoje17]

It's is in plugins/userdata/
every player has it's own file

[triagonal]

As @Radoje17 mentioned above, you should find the player data files in plugins/Essentials/userdata in separate files named <uuid>.yml for each player.