Подправить код вывода артикула ???

<? $action = $_GET['action'];
$id = $_GET['id'];
$quantity = $_GET['quantity'];

if (CModule::IncludeModule("sale") && CModule::IncludeModule("catalog")) {
    if (($action == "ADD2BASKET" || $action == "BUY") && IntVal($id) > 0 && IntVal($quantity) > 0) {

   // retrieving article of the product
        $db_article = CIBlockElement::GetProperty(9, intval($id), Array(), Array("CODE" => "ID_PRODUKT_PROVIDER"));
        if ($ar_article = $db_article->Fetch())
            $ARTICLE = $ar_article["VALUE"];
        else
            $ARTICLE = "";
        
   // retrieving supplier name of the product
        $db_supplier = CIBlockElement::GetProperty(9, intval($id), Array(), Array("CODE" => "DEALER"));
      
      if($ar_supplier = $db_supplier->Fetch())
      {
         $SUPPLIER_ID = $ar_supplier["VALUE"];
      }
      else
         $SUPPLIER_ID = null;
      
      if ($SUPPLIER_ID != null)
      {
         $res = CIBlockElement::GetByID($SUPPLIER_ID);
         if($ar_res = $res->GetNext())
            $SUPPLIER = $ar_res['NAME'];
          else
            $SUPPLIER = "";
      }
      else
      {
         $SUPPLIER = "";
      }?>