userlist pagination don't change page

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hi
i'm using this simple code for list all the user whit pagination but when i click on next the user list is the same.
i've disabled the cache.
<?php
   $lista = new \Concrete\Core\User\UserList();
  //$list->filterByGroup('editor');
// $list = new \Concrete\Core\Page\PageList();
$paginazione = $lista->getPagination();
$paginazione->setMaxPerPage(3);
$results = $paginazione->getCurrentPageResults();
       foreach($results as $u){
       // $u = Page::getCurrentPage();
// echo $u->getCollectionName(); 
   echo $u->getUserName();
   echo "<br>";
       }
      //echo $pagination->getTotalResults();
      //echo $pagination->getTotalPages();


any ideas?