Количество товара отправляемого в корзину

echo "QUANTITY: ".intval($_POST[$arParams["PRODUCT_QUANTITY_VARIABLE"]]);

<input type="hidden" name="<?echo $arParams["ACTION_VARIABLE"]?>" value="BUY">
<input type="hidden" name="<?echo $arParams["PRODUCT_ID_VARIABLE"]?>" value="<?echo $arResult["ID"]?>">
<input type="submit" name="<?echo $arParams["ACTION_VARIABLE"]."ADD2BASKET"?>" value="В КОРЗИНУ" class="butbask"><br>

         if($arParams["USE_PRODUCT_QUANTITY"])
            {
               $QUANTITY = 0;
               $QUANTITY = intval($_POST[$arParams["PRODUCT_QUANTITY_VARIABLE"]]);
            }
         if($QUANTITY <= 1)
            $QUANTITY = 1;

<? $arParams["USE_PRODUCT_QUANTITY"]="Y"?>

      

      $arBasketItems['QUANTITY'] = $arParams['QUANTITY_FLOAT'] == 'Y' ? DoubleVal($arBasketItems['QUANTITY']) : IntVal($arBasketItems['QUANTITY']);

      if(!isset($_REQUEST["QUANTITY_".$arBasketItems["ID"]]))
         $quantityTmp = $arBasketItems['QUANTITY'];
      else
         $quantityTmp = $arParams['QUANTITY_FLOAT'] == 'Y' ? DoubleVal($_REQUEST["QUANTITY_".$arBasketItems["ID"]]) : IntVal($_REQUEST["QUANTITY_".$arBasketItems["ID"]]);

...

      elseif ($arBasketItems["DELAY"] == "N" && $arBasketItems["CAN_BUY"] == "Y")
      {
   UnSet($arFields);
         $arFields = array();
         if (in_array("QUANTITY", $arParams["COLUMNS_LIST"]))
            $arFields["QUANTITY"] = $quantityTmp;
         if (in_array("DELAY", $arParams["COLUMNS_LIST"]))
            $arFields["DELAY"] = $delayTmp;

         if (count($arFields) > 0
            &&
               ($arBasketItems["QUANTITY"] != $arFields["QUANTITY"] && in_array("QUANTITY", $arParams["COLUMNS_LIST"])
                  || $arBasketItems["DELAY"] != $arFields["DELAY"] && in_array("DELAY", $arParams["COLUMNS_LIST"]))
            )
            CSaleBasket::Update($arBasketItems["ID"], $arFields);
      }