How to make pdo menu?

Question

MODX

There is a menu:

<ul class="rd-navbar-nav">
   <li class="active"><a href="#"><span class="text-middle">Главная</span></a></li>
   <li><a href="#"><span class="text-middle">Каталог</span></a>
      <ul class="rd-navbar-dropdown">
         <li><a href="#"><span class="text-middle">Новинки</span></a></li>
         <li><a href="#"><span class="text-middle">Ещё что то</span></a></li>
      </ul>
   </li>
</ul>

I have already tried to set it up in pdo in every possible way. Does not work. help me please

Answer 1