@Override
	public void execute(CommandSender sender, String worldName,	List<String> args) {
		this.sender = sender;
		
		if (worldName == null) {
			error("No world given.");
			reply("Usage: /gworld listplayers <worldname>");
		} else if (!hasWorld(worldName)) {
			reply("World not found: " + worldName);
		} else {
			String players = "";
			for (Player player : plugin.getServer().getWorld(worldName).getPlayers()) {
				players += ", " + player.getName();
			}
			
			if (players.length() > 0) {
				reply("Players in world " + worldName + ": " + players.substring(2));
			} else {
				reply("No players in world " + worldName + ".");
			}
		}
	}