Question Potion Effects

I'm trying to give a mob a potion effect of strength 50 forever (I'm making a boss mob in a plugin). I've tried this code:

Code:

zombie.addPotionEffect(new PotionEffect(PotionEffectType.INCREASE_DAMAGE));

I get errors, and I think this is only strength one. Can someone with superior programming knowledge help me?

Here are my imports:

Imports (open) Imports (close)

Code:

import org.bukkit.ChatColor;
import org.bukkit.Material;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.entity.Zombie;
import org.bukkit.inventory.ItemStack;
import org.bukkit.plugin.java.JavaPlugin;
import org.bukkit.potion.PotionEffect;
import org.bukkit.potion.PotionEffectType;

 

Here:

Code:

zombie.addPotionEffect(new PotionEffect(PotionEffectType.INCREASE_DAMAGE, DURATION, AMPLIFIER));

Replace the Duration with the duration in ticks and the amplifier with the amplifier

 

Sorry for the late reply, but thanks