extension = php_gmp.dll in php.ini
extension = php_gmp.dll
CIBlockElement::SetPropertyValuesEx($elementId, $iblockId, ['Export' => 'YES']);
$arFilter = array(
'=UF_ELEMENT' => $iElementId
);
$elementsResult = CUser::GetList(($by="ID"), ($order="DESC"), $arFilter);