$imagePct = CFile::MakeFileArray("http://ysite.ru/storage/" . $product['image_path']);
$arLoadProductArray = Array(
"MODIFIED_BY" => $USER->GetID(),
"IBLOCK_SECTION" => false,
"PROPERTY_VALUES"=> $PROP,
"ACTIVE" => "Y",
"DETAIL_PICTURE" => $imagePct,
"PREVIEW_PICTURE" => $imagePct
);
$el->Update($ar_field['ID'], $arLoadProductArray);