Teleport plugin not working

Hello! I'm really new to making plugins, just wanted to make that clear! So I tried to make a plugin that teleported you to the spawn area when you joined the server and if you had joined the server before it would send you a message that said Welcome back and if you hadn't joined before it would say welcome to the server! But nothing worked I don't know what I did wrong. Please help!

Code:

    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
  
    Location location = new Location(getServer().getWorld("world"),513557, 50, 58133);
      
    Player plr = (Player) sender;
  
    if (plr.hasPlayedBefore()){
        plr.sendMessage("Welcome back," + plr.getDisplayName() + "!");
        plr.teleport(location);
    } else {
        plr.teleport(location);
        }
    return false;
    }

 

Why didn't I think of that! I'll try that right now if it doesn't work I guess I'll just like reply or something

Still doesn't work..
@EventHandler
public void onPlayerJoinEvent(PlayerJoinEvent Joined) {

Location location = new Location(getServer().getWorld("world"),513557, 50, 58133);

if (Joined.getPlayer().hasPlayedBefore()){
Joined.getPlayer().sendMessage("Welcome back," + Joined.getPlayer().getDisplayName() + "!");
Joined.getPlayer().teleport(location);
} else {
Joined.getPlayer().sendMessage("Welcome" + Joined.getPlayer().getDisplayName() + "to Fullz Network!");
Joined.getPlayer().teleport(location);
}
}
}

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

No I don't think so can, can you help me register the event?

 

Ok so it worked but when I tried to add color to the welcome messages it said Invalid plugin.yml
Here is the plugin.yml

Code:

name: FullzSpawn
main: me.Fullzer0.FullzSpawn.main
version: 0.0.5
author: Fullzer0

commands:

 

Thank you so much! My plugin is now working! Thank you so much for helping me make my plugin!