это он

if($_GET["AJAX"] == "Y" && $_GET["IBLOCK_ID"] == $arParams["IBLOCK"]){
        $APPLICATION->RestartBuffer();

        if($_POST['data-token'] == 'mWfX4R2Pqo'){
            CModule::IncludeModule("iblock");
            $el = new CIBlockElement;
            $arProps = array();

            $arGT = Array(
                "IBLOCK_ID" => $arParams["IBLOCK"],
                "PREVIEW_TEXT_TYPE" => "TEXT",
            );

            if($_POST['data-inactive']){
                $arGT["ACTIVE"] = "N";
            } else {
                $arGT["ACTIVE"] = "Y";
            }

            $arEventFields = array();

            foreach($_POST as $key => $prop){
                if($key == "NAME"){
                    $arGT["NAME"] = $prop;
                    $arEventFields["NAME"] = $prop;
                } elseif($key == "PREVIEW_TEXT"){
                    $arGT["PREVIEW_TEXT"] = $prop;
                    $arEventFields["COMMENT"] = $prop;
                } elseif(strpos($key, "PROPERTY") !== false) {
                    if(strpos($key, "_SELECT") !== false) {
                        $arProps[str_replace("PROPERTY_", '', str_replace("_SELECT","",$key))] = Array("VALUE"=>$prop);
                    } else {
                        $arProps[str_replace("PROPERTY_", '', $key)] = $prop;
                    }
                    $checkbox = false;
                    foreach($iblock_fields as $field){
                        if($field["CODE"] == str_replace("PROPERTY_", '', str_replace("_SELECT","",$key)) && $field["PROPERTY_TYPE"] == "L"){
                            $checkbox = true;
                        }
                    }
                    if($checkbox == true){
                        $propname = getPropertyEnumValueById(str_replace("PROPERTY_", '', str_replace("_SELECT","",$key)), $prop, $arResult["ID"]);
                        $arEventFields[str_replace("PROPERTY_", '', str_replace("_SELECT","",$key))] = $propname;
                    } else {
                        $arEventFields[str_replace("PROPERTY_", '', str_replace("_SELECT","",$key))] = $prop;
                    }
                }
            }

            foreach($_FILES as $k => $prop){
                if($k == "PREVIEW_PICTURE" || $k == "DETAIL_PICTURE"){
                    $img = CFile::SaveFile(
                        Array(
                            "name" => $prop["name"],
                            "size" => $prop["size"],
                            "tmp_name" => $prop["tmp_name"],
                            "type" => $prop["type"],
                        ), "reviews"
                    );
                    $file = CFile::GetFileArray(intval($img));
                    if (intval($img)>0){$arGT[$k] = CFile::MakeFileArray($file["SRC"]);}
                } else {
                    $img = CFile::SaveFile(
                        Array(
                            "name" => $prop["name"],
                            "size" => $prop["size"],
                            "tmp_name" => $prop["tmp_name"],
                            "type" => $prop["type"],
                        ), "reviews"
                    );
                    $file = CFile::GetFileArray(intval($img));
                    if (intval($img)>0){
                        $arProps[str_replace("PROPERTY_", '', $k)] = CFile::MakeFileArray($file["SRC"]);
                    }
                }
            }

            $arGT["PROPERTY_VALUES"] = $arProps;

            if($res=$el->Add($arGT)){
                echo 'success';
            } else {
                echo 'fail';
            }
            if($arParams["POST_EVENT"]){
                CEvent::Send($arParams["POST_EVENT"], SITE_ID, $arEventFields);
            }
        } else {
            echo 'success';
        }
        die();

} else {
    $this->IncludeComponentTemplate();
}