>>> [!note] Migrated issue <!-- Drupal.org comment --> <!-- Migrated from issue #3588753. --> Reported by: [ahmad khader](https://www.drupal.org/user/3727855) Related to !37 >>> <h3 id="summary-problem-motivation">Problem/Motivation</h3> <p>A new functionality has been implemented that allows loaders to define fields that can be passed to the document loader's tools (issue <span class="drupalorg-gitlab-issue-link drupalorg-gitlab-link-wrapper"><a href="https://git.drupalcode.org/project/document_loader/-/work_items/3577857" class="drupalorg-gitlab-link">https://git.drupalcode.org/project/document_loader/-/work_items/3577857</a></span>). It would be beneficial to support this feature in the MDX editor, enabling loaders such as Unstructured IO to be fully functional within the MDX editor environment.</p> <h4 id="summary-steps-reproduce">Steps to reproduce</h4> <h3 id="summary-proposed-resolution">Proposed resolution</h3> <h3 id="summary-remaining-tasks">Remaining tasks</h3> <h3 id="summary-ui-changes">User interface changes</h3> <h3 id="summary-api-changes">API changes</h3> <h3 id="summary-data-model-changes">Data model changes</h3> > Related issue: [Issue #3577857](https://www.drupal.org/node/3577857)