Custom dragons problem

Wanted to create a couple of new types of dragons with custom names, strength and health
Ran into a problem... On ender dragon spawn does not change anything

Code:

public class DragonTypes {
    @EventHandler
    public void onEnderDragonSpawn (CreatureSpawnEvent event) {
        EnderDragon Drag = (EnderDragon) event.getEntity();
        int matchDrag = new Random().nextInt(100);
        if (matchDrag > 58){
            Bukkit.broadcastMessage("§5§lEnder Dragon §r§5has spawned!");
            Drag.setCustomName("§5§lEnder Dragon");
            Drag.addPotionEffect(new PotionEffect(PotionEffectType.DAMAGE_RESISTANCE, 20000000, 1));
            Drag.addPotionEffect(new PotionEffect(PotionEffectType.HEALTH_BOOST, 20000000, 10));
            Drag.addPotionEffect(new PotionEffect(PotionEffectType.INCREASE_DAMAGE, 20000000, 1));
        }
        if (matchDrag < 59 && matchDrag > 30){
            Bukkit.broadcastMessage("§2§lGoldor Dragon §r§5has spawned!");
            Drag.setCustomName("§2§lGoldor Dragon");
            Drag.addPotionEffect(new PotionEffect(PotionEffectType.DAMAGE_RESISTANCE, 20000000, 4));
            Drag.addPotionEffect(new PotionEffect(PotionEffectType.HEALTH_BOOST, 20000000, 40));
            Drag.addPotionEffect(new PotionEffect(PotionEffectType.INCREASE_DAMAGE, 20000000, 1));
        }
        if (matchDrag > 10 && matchDrag < 31){
            Bukkit.broadcastMessage("§3§lStorm Dragon §r§5has spawned!");
            Drag.setCustomName("§3§lStrom Dragon");
            Drag.addPotionEffect(new PotionEffect(PotionEffectType.DAMAGE_RESISTANCE, 20000000, 2));
            Drag.addPotionEffect(new PotionEffect(PotionEffectType.HEALTH_BOOST, 20000000, 20));
            Drag.addPotionEffect(new PotionEffect(PotionEffectType.INCREASE_DAMAGE, 20000000, 2));
        }
        if (matchDrag > 0 && matchDrag < 11){
            Bukkit.broadcastMessage("§c§lNecron Dragon §r§5has spawned!");
            Drag.setCustomName("§c§lNecron Dragon");
            Drag.addPotionEffect(new PotionEffect(PotionEffectType.DAMAGE_RESISTANCE, 20000000, 2));
            Drag.addPotionEffect(new PotionEffect(PotionEffectType.HEALTH_BOOST, 20000000, 10));
            Drag.addPotionEffect(new PotionEffect(PotionEffectType.INCREASE_DAMAGE, 20000000, 4));
        }
        if (matchDrag == 0){
            Bukkit.broadcastMessage("§6§lNecrolord Dragon §r§5has spawned!");
            Drag.setCustomName("§6§lNecrolord Dragon");
            Drag.addPotionEffect(new PotionEffect(PotionEffectType.DAMAGE_RESISTANCE, 20000000, 3));
            Drag.addPotionEffect(new PotionEffect(PotionEffectType.HEALTH_BOOST, 20000000, 30));
            Drag.addPotionEffect(new PotionEffect(PotionEffectType.INCREASE_DAMAGE, 20000000, 2));
        }
    }
}

 

@Lavarite
So what happens? My guess is that you'll get a fair few errors from this since not every entity that gets spawned will be an Ender Dragon.

Consider adding a check for that first of all.

Do you get any messages in the chat? Or does it just not run at all?

If the latter, have you registered your events?

 

I do not get ANY messages or errors in IDE
although this code only gets triggered on enderdragonspawn

 

@Lavarite
This code will get trigger when any Creature spawns.

Did you register your events?

 

oh i see now yes
i did not register them
and do you know how to trigger it on enderdragon spawn?

 

@Lavarite
Check if event.getEntity() is instanceof EnderDragon.

 

did the check and still nothin

 

@timtower
Yep it gets broadcasted!
There are parts in code like
Bukkit.broadcastMessage("§5§lEnder Dragon §r§5has spawned!");

 

RESOLVED
didn't set up listener