public static function SetSentFileID($deal_id, $valu) { $arOld = CArkaCrm::GetSentFilesIDs($deal_id); // test if the same is in array if (!in_array($valu, $arOld)) { $arOld[] = $valu; CArkaCrm::setUserFieldForDeal($deal_id, 'UF_CRM_1416388897', $arOld); } }