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This is a part of a bigger problem, as I have found out here.

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Hello all, 

this topic can be seen as sister-topic for this one. I have a generally working grid (listing and searching work), but two things are not working: reset button (see the sister topic for details) and, as I have just found out, trying to switching number of results per page has the same effect as with the reset button: nothing happens except the select box value is changed. No request, no page load, no changes in results display. After I reload the page, the value in the select box is set back to the default. As I have mentioned in the sister-topic, I'm building the grid and the search form exactly as it is described on the official tutorial pages. The system generates the following HTML for the select box:

 

<div class="form-group row mb-0">
      <label for="paginator_select_page_limit" class="col-form-label mr-2">Items per page:</label>
      <div>
        <select name="paginator_select_page_limit" id="paginator_select_page_limit" psurl="/admin-dev/index.php/modules/kursanmeldungen?_route=0&amp;course_list%5Boffset%5D=0&amp;course_list%5Blimit%5D=_limit&amp;_token=ooPhgOvN8rhNQEQ7UPu68Q_3LiTRpD581hVS4Y4AGe8" class="pagination-link custom-select">
                                <option value="10" selected="selected">10</option>
                      <option value="20">20</option>
                      <option value="50">50</option>
                      <option value="100">100</option>
                      <option value="300">300</option>
                      <option value="1000">1000</option>
                  </select>
      </div>
</div>

I'd be grateful for any help in fixing these problems.