private function loadCommTypeAttr(Gpf_Rpc_Form $form, $attributeName) {
     $commTypeAttr = new Pap_Db_CommissionTypeAttribute();
     $commTypeAttr->setCommissionTypeId($form->getFieldValue("Id"));
     $commTypeAttr->setName($attributeName);
     try {
         $commTypeAttr->loadFromData(array(Pap_Db_Table_CommissionTypeAttributes::COMMISSION_TYPE_ID,
         Pap_Db_Table_CommissionTypeAttributes::NAME));
         $form->addField($attributeName, $commTypeAttr->getValue());
     } catch (Gpf_Exception $e) {
         $form->addField($attributeName, '0');
     }
 }