Help with Config

Code:java

public void FirstJoin(PlayerJoinEvent event){
Player p = event.getPlayer();
 
if(!p.hasPlayedBefore()){
event.setJoinMessage(null);
//This doesn't work, dunno why
Plugin.get().getConfig().addDefault("players." + p.getName() + ".world", "world");
Plugin.get().getConfig().addDefault("players." + p.getName() + ".currency", "0");
 
}
 
else{
 
event.setJoinMessage(null);
//How to set to the defaults if a player doesn't have anything
Plugin.get().getConfig().addDefault("players." + p.getName() + ".world", "Alcatraz");
Plugin.get().getConfig().addDefault("players." + p.getName() + ".currency", "0");
 
}
}

So i'm trying to have it add things per player that joins, to the config, but this doesn't work, and i'm not all that good with configs so can anyone help me out here? what am i doing wrong? how can i do better and make it actually work

 

You forgot your @EventHandler.

 

Nope, just didn't put that in there
Helpful bumb also

 

PlayerJoin is a bitch, add a 1tick delay before doing anything.