third level menu not working in opencart 2.0.3.1

[JSON12345]

hi sir,
i am trying to implement third level menu in website but category.tpl is not working properly
plz help me in that
my email is jsonforit@gmail.com

the code is 👍

   - 0){ ?>

                    <ul> 
                           <?php foreach ($child['children_lv3'] as $child_lv3) { ?>
                           <li><a href="<?php echo $child_lv3['href']; ?>"><?php echo $child_lv3['name']; ?></a></li>
                            <?php  } ?>
                        </ul>
                    <?php } ?>

   -

[rejas]

could you provide better samples for your code and what is not working?