Tagapi dont work for me

package io.github.thepickageking.mtw;

import org.bukkit.ChatColor;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.plugin.java.JavaPlugin;
import org.kitteh.tag.PlayerReceiveNameTagEvent;

public final class main extends JavaPlugin implements Listener{

    @Override
    public void onEnable(){
        getLogger().info("onEnable has been invoked!");
        getServer().getPluginManager().registerEvents(this, this);
    }

    @Override
    public void onDisable(){
        getLogger().info("onDisable has been invoked!");

        @EventHandler
        public void onNameTag(PlayerReceiveNameTagEvent event) {
        if (event.getPlayer().getName().equals("thepickageking")) {
        event.setTag(ChatColor.RED + "TIRtalin");
        }
        }
    }

        public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args){
            if(cmd.getName().equalsIgnoreCase("victorisbeest")){
                sender.sendMessage(ChatColor.GOLD + "[minecrafttotalwar]" + ChatColor.BLUE + "Dat is waar");
                getLogger().info(ChatColor.DARK_PURPLE + "iemand heeft smaak");
                return true;
            }
            return false;
    }

}