Solved This has no errors, but I'm trying to test for a world and it applies to all of them

public function onHit(EntityDamageEvent $event){
if($event->getEntity() instanceof Player){
$level = $event->getEntity()->getLevel()->getFolderName();
if($level->getFolderName() = $this->settings->getNested("worlds.combo")){
$event->setCancelled(false);
}
}
}

 

because you used a single = use a double == for comparison (equal)

 

ok I'll try that thanks