I want to add a description field to my menu and and use it in front.

I managed to have a text\_format field for my description (in /admin/structure/menu/manage/main) but when I click on save, that field is empty.

```
function HOOK_form_alter(&$form, $form_state, $form_id) {
  if ($form_id != 'menu_edit_form') {
    return false;
  }
  $form['field_menu_content'] = array(
   '#type' => 'text_format',
   '#title' => t('Description'),
   '#format' => 'full_html',
  );
}

```