v class="form-group">
                <form action="{f:be.uri(route: 'typoscript_active', parameters: '{id: pageUid}')}" method="post">
                    <div class="form-check form-switch form-check-size-input">
                        <input type="hidden" name="displayConstantSubstitutions" value="0" />
                        <input
                            type="checkbox"
                            class="form-check-input"
                            name="displayConstantSubstitutions"
           