if (1 == $oldCat->getVar('cat_nb_photo')) {
                        $criteria = new \CriteriaCompo();
                        $criteria->add(new \Criteria('nleft', $oldCat->getVar('nleft'), '<'));
                        $criteria->add(new \Criteria('nright', $oldCat->getVar('nright'), '>'));
                        $catHandler->updateFieldValue('cat_nb_album', 'cat_nb_album - 1', $criteria);