Как прикрепить файл диска к элементу

$value="n".$fileiddisk;
$GLOBALS["USER_FIELD_MANAGER"]->update("IBLOCK_".$IBLOCK_ID."_SECTION",$ID_SECTION, array('UF_DISK_FILE' => $value));

$value="";
$GLOBALS["USER_FIELD_MANAGER"]->update("IBLOCK_".$IBLOCK_ID."_SECTION",$ID_SECTION, array('UF_DISK_FILE' => $value));

use Bitrix\Main\Application;
use Bitrix\Main\Web\Uri;
\Bitrix\Main\Loader::includeModule('disk');
$this->addExternalCss("/bitrix/components/bitrix/disk.file.view/templates/.default/style.min.css");
CJSCore::Init(['ui.viewer']);


$driver = \Bitrix\Disk\Driver::getInstance();
$userFieldManager = $driver->getUserFieldManager();
$urlManager = $driver->getUrlManager();

if($sect["UF_DISK_FILE"]>0){
 $attachedModel = $userFieldManager->getAttachedObjectById($sect['UF_DISK_FILE']);
 if($attachedModel){
   $fileModel = $attachedModel->getFile();
   $fileUri=new Uri($urlManager->getUrlForDownloadFile($fileModel));
      
   $attr = \Bitrix\Disk\Ui\FileAttributes::buildByFileId(
           $fileModel->getFileId(),$fileUri)
                     ->setObjectId($fileModel->getId())
                     ->setTitle($fileModel->getName())
                     ->addAction(['type' => 'download']);
        $sect["HTML_DISK_FILE"]=" <span class='disk-detail-sidebar-editor-item disk-detail-sidebar-editor-item-show' id='bx-disk-filepage-filename' ".$attr.">Текст кнопки</span>";
        echo $sect["HTML_DISK_FILE"];

 }
}