public boolean checkPermission(CommandSender sender) {
		if ((this.permission == null) || (this.permission.length() == 0) || (sender.hasPermission(this.permission))) {
				return true;
		}
		sender.sendMessage(ChatColor.RED + "Insufficient permissions");
		sender.sendMessage(ChatColor.RED + "Requires " + permission);
		return false;
	}