[PurePerms] How to add a player to a existing group?

I would like to code that when a player execute /levelup that he will be added to a new existing group using PurePerms.
How i should code this?

This is not working:

PHP:

$this->getServer()->getPluginManager()->getPlugin("PurePerms")->addToGroup($name, "Developer");

What should i use use instead?

 

Why role, why not a STR like {level}

 

Because i want that so.

 

Take a look at PurePerms' UserDataManager:
https://github.com/poggit-orphanage...rc/_64FF00/PurePerms/data/UserDataManager.php

 

Now it crashs because '$this' is unexpected...

PHP:

$pperms = $this->getServer()->getPluginManager()->getPlugin("PurePerms");

and yes, before you ask, o registered the Events on onEnable()..

 

Should full code please