public function beforeGetTaskform($viewer)
 {
     $pause_rows = $this->get("pause_rows");
     if ($pause_rows == -1) {
         $this->set("pause_rows", 50);
     }
     $cols = $this->get("cols");
     if ($cols == -1) {
         $cols = array();
     }
     foreach ($cols["key"] as $index => $col) {
         if (empty($col)) {
             unset($cols["key"][$index]);
             unset($cols["value"][$index]);
         }
     }
     $viewer->assign("cols", $cols);
     $references = \Workflow\VtUtils::getReferenceFieldsForModule($this->getModuleName());
     $viewer->assign("reference", $references);
 }