Plugin Help PEX Permissions not working

I'm currently working on a server and am setting up permissions. I've been trying to add the ability to changing gamemodes to the donator rank (labeled as Moderator), I did /pex group Donator add gamemode*, when that didn't work I did /pex group Donator add gamemode. That did not work either. If anyone can help me I would greatly appreciate it. I have included a picture of my permissions.yml file.

 

@slappy1229
Don't put slashes (/) You just need the permission. For players to change gamemodes they need the - essentials.gamemode
permission. Then you need to specify which gamemodes they can change too:
- essentials.gamemode.creative
- essentials.gamemode.survival
Or let them switch to any gamemode:
- essentials.gamemode.all

Remember, you don't need /'s in the permissions file.