getInteger w/ GM

gistfile1.java

    private UserVariables getVariables(CommandSender sender) {
        final Player player = MinecraftUtil.cast(Player.class, sender);
        if (player != null) {
            OverloadedWorldHolder permissions = this.groupManager.getWorldsHolder().getWorldData(player);
            if (permissions != null) {
                User user = permissions.getUser(player.getName());
                if (user != null) {
                    return user.getVariables();
                }
            }
        }
        return null;
    }

    @Override
    public Integer getInteger(CommandSender sender, Permission<Integer> permission) {
        final UserVariables variables = getVariables(sender);
        if (variables != null) {
            return variables.getVarInteger(permission.getName());
        }
        return null;
    }