Teleporting through different worlds.

I am trying to make it so when you run the command "/kit" it will teleport you to a different world. I have duplicated the world folder in my server folder and I think that's how you do it, but I am unsure.
This is also my code:

if (label.equalsIgnoreCase("kitpvp")) {
p.teleport(new Location(Bukkit.getServer().getWorld("kit"),0,0,0));

return true;
}

My problem is when I run the command I get an error "There was an internal error.".
Any help would be appreciated!

 

How do I load the world though?

nvm i got it working. that was the problem ty!

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

 

p.teleport(new Location(Bukkit.getWorld("kit"),0,0,0));