I made this small test to try to grant permissions via a plugin, revoking works fine but grant doesn't work. Is this correct use @Wulf?

using Oxide.Core.Libraries.Covalence;

namespace Oxide.Plugins
{
    [Info("Test", "klauz24", 1.0)]
    class testGrantRevoke : CovalencePlugin
    {
        const string perm = "test.perm";

        void Init()
        {
            permission.RegisterPermission(perm, this);
        }

        [Command("grant")]
        void cmdTestPlugin(IPlayer player)
        {
            permission.GrantUserPermission(player.Id, perm, this);
        }

        [Command("revoke")]
        void cmdTestPlugin1(IPlayer player)
        {
            permission.RevokeUserPermission(player.Id, perm);
        }
    }
}​

Yes, same methods that Oxide uses for the commands.

Got it working, thanks