public function run()
 {
     global $tree;
     include_once "Modules/Survey/classes/class.ilObjSurvey.php";
     $status = ilCronJobResult::STATUS_NO_ACTION;
     $message = array();
     $root = $tree->getNodeData(ROOT_FOLDER_ID);
     foreach ($tree->getSubTree($root, false, "svy") as $svy_ref_id) {
         $svy = new ilObjSurvey($svy_ref_id);
         if ($svy->checkReminder()) {
             $message[] = $svy_ref_id;
             $status = ilCronJobResult::STATUS_OK;
         }
     }
     $result = new ilCronJobResult();
     $result->setStatus($status);
     if (sizeof($message)) {
         $result->setMessage("Ref-Ids: " . implode(", ", $message));
         $result->setCode("#" . sizeof($message));
     }
     return $result;
 }