Cancel the death event?

PHP:

public function onDamage(EntityDamageEvent $event){
     if($event->getEntity() instanceof Player && $event->getDamager() instanceof Player){
         $player = $event->getEntity();
         $damager = $event->getDamager();
       if($event->getFinalDamage() >= $player->getHealth()){
           $event->setCancelled(true);
           $player->setGamemode(3);
           $message = T::GRAY . $player->getName() . T::YELLOW . " Fue asesinado por " . T::GOLD . $d->getName();
           foreach($player->getLevel()->getPlayers() as $p){
             $p->getLevel()->addSound(new AnvilUseSound($p));
           $p->sendMessage(T::BLUE . "[SkyWars] ".$message);
           }
           $player->setHealth($player->getMaxHealth());
       }
  }
 }

MY SKYWARS HAS SPECTATOR MODE, BUT ON DYING THE TELEPORT TO THE DEFAULT WORLD, AND I WANT TO CANCEL THAT: /

 

Is your class registered as a listener properly? Also, you need to check if the event is an instanceof EntityDamageByEntityEvent if you want to do event->getDamager(), or you'll have a lot of errors.

 

If that already implements that, and I think it already serves