setup/includes/upgrades/common/2.2-disable-allowtagsinpost.php
<?php
/**
* Common upgrade script for disabling allow_tags_in_post System Setting
*
* See issue #9080.
*
* @var modX $modx
* @package setup
*/
if ($object = $modx->getObject('modSystemSetting', array('key' => 'allow_tags_in_post', 'value' => '1'), false)) {
$object->set('value', '0');
$object->save();
}