diff --git a/src/BackendBehaviors.php b/src/BackendBehaviors.php
index 59058a7..24bfd93 100644
--- a/src/BackendBehaviors.php
+++ b/src/BackendBehaviors.php
@@ -19,9 +19,15 @@ use dcBlog;
 use dcCore;
 use dcPage;
 use dcPostsActions;
+use Dotclear\Helper\Html\Form\{
+    Form,
+    Hidden,
+    Para,
+    Submit,
+    Text
+};
+use Dotclear\Helper\Html\Html;
 use Exception;
-use form;
-use html;
 
 class BackendBehaviors
 {
@@ -50,23 +56,26 @@ class BackendBehaviors
         if (empty($_POST['confirmdeletecomments'])) {
             $pa->beginPage(
                 dcPage::breadcrumb([
-                    html::escapeHTML(dcCore::app()->blog->name) => '',
+                    Html::escapeHTML(dcCore::app()->blog->name) => '',
                     $pa->getCallerTitle()                       => $pa->getRedirection(true),
                     __('Delete posts comments')                 => '',
                 ])
             );
 
             echo
-            '<form action="' . $pa->getURI() . '" method="post">' .
-            $pa->getCheckboxes() .
-            '<p>' . __('Are you sure you want to delete all comments?') . '</p>' .
-            '<p>' .
-            dcCore::app()->formNonce() .
-            $pa->getHiddenFields() .
-            form::hidden(['action'], 'commentsdelete') .
-            form::hidden(['confirmdeletecomments'], 1) .
-            '<input type="submit" value="' . __('yes') . '" /></p>' .
-            '</form>';
+            (new Form('plocd'))->method('post')->action($pa->getURI())->fields([
+                (new Text('', $pa->getCheckboxes())),
+                (new Text('p', __('Are you sure you want to delete all comments?'))),
+                (new Para())->items(array_merge(
+                    [
+                        (new Submit(['do']))->value(__('yes')),
+                        dcCore::app()->formNonce(false),
+                        (new Hidden(['action'], 'commentsdelete')),
+                        (new Hidden(['confirmdeletecomments'], '1')),
+                    ],
+                    $pa->hiddenFields(),
+                )),
+            ])->render();
 
             $pa->endPage();
         } else {
@@ -104,23 +113,26 @@ class BackendBehaviors
         if (empty($_POST['confirmdeletetrackbacks'])) {
             $pa->beginPage(
                 dcPage::breadcrumb([
-                    html::escapeHTML(dcCore::app()->blog->name) => '',
+                    Html::escapeHTML(dcCore::app()->blog->name) => '',
                     $pa->getCallerTitle()                       => $pa->getRedirection(true),
                     __('Delete posts trackbacks')               => '',
                 ])
             );
 
             echo
-            '<form action="' . $pa->getURI() . '" method="post">' .
-            $pa->getCheckboxes() .
-            '<p>' . __('Are you sure you want to delete all trackbacks?') . '</p>' .
-            '<p>' .
-            dcCore::app()->formNonce() .
-            $pa->getHiddenFields() .
-            form::hidden(['action'], 'trackbacksdelete') .
-            form::hidden(['confirmdeletetrackbacks'], 1) .
-            '<input type="submit" value="' . __('yes') . '" /></p>' .
-            '</form>';
+            (new Form('plotd'))->method('post')->action($pa->getURI())->fields([
+                (new Text('', $pa->getCheckboxes())),
+                (new Text('p', __('Are you sure you want to delete all trackbacks?'))),
+                (new Para())->items(array_merge(
+                    [
+                        (new Submit(['do']))->value(__('yes')),
+                        dcCore::app()->formNonce(false),
+                        (new Hidden(['action'], 'trackbacksdelete')),
+                        (new Hidden(['confirmdeletetrackbacks'], '1')),
+                    ],
+                    $pa->hiddenFields(),
+                )),
+            ])->render();
 
             $pa->endPage();
         } else {
@@ -153,7 +165,7 @@ class BackendBehaviors
 
         $cur->update(
             'WHERE post_id = ' . $id . ' ' .
-            "AND blog_id = '" . dcCore::app()->con->escape(dcCore::app()->blog->id) . "' "
+            "AND blog_id = '" . dcCore::app()->con->escapeStr((string) dcCore::app()->blog->id) . "' "
         );
         dcCore::app()->blog->triggerBlog();
     }