title: In TYPO3 tx_news, how to filter by categories?
body: <p>In tx_news, filtering by categories via Typoscript doesn't work as expected</p>
  
  <pre><code>  settings {
          limit = 5
          orderBy = datetime
          orderDirection = asc
          overrideFlexformSettingsIfEmpty := addToList(detailPid)
          categories = 24
    }
  </code></pre>
  
  <p>The categories filter is not being applied. How can it be done?</p>