Why doesn't the setLevel-method work?

Hey
iam new in plugin programming. In this event I just want to set my level on the value of "aktuellerLevel". All works and I checked the value of "aktuellerLevel" with consol output and it's all correct, but the Level will not be changed

 

The problem is that this event is fired before the player respawns and thereby you cannot set the players level. What you need to do is schedule a bukkit runnable to run your code at least 1 tick later.

Also, is there a reason that this EventHandler has priority high? There doesn't seem to be too much of a reason for it to me..

 

Thank you it worked with a scheduler. Yes I don't know why I configurate the priority so high. At the beginning I think it doesn't matter which priority I choose

 

Well, if you don't specify a priority it will do normal priority