Подключил событие OnGetOptimalPrice в init.php. Не работают скидки

AddEventHandler("catalog", "OnGetOptimalPrice", "MyGetOptimalPrice");
   
function MyGetOptimalPrice(
    $intProductID,
    $quantity = 1,
    $arUserGroups = array(),
    $renewal = "N",
    $arPrices = array(),
    $siteID = false,
    $arDiscountCoupons = false
 )   { 
 
  return array(
          "PRICE" => array(
            "ID" => $intProductID,
            "CATALOG_GROUP_ID" => $ar_res[CATALOG_GROUP_ID],
            "PRICE" => $basePrice[PRICE],
            "CURRENCY" => $basePrice[CURRENCY],
            "ELEMENT_IBLOCK_ID" => $ar_res[IBLOCK_ID],
            "VAT_RATE" => 0,
            "VAT_INCLUDED" => "Y"
            ),
          "DISCOUNT_PRICE" => $basePrice[PRICE]-100,
          'DISCOUNT' => array( 
              'ID' => 2,
              'SITE_ID' => false,
              'ACTIVE' => "Y",
              'ACTIVE_FROM' => ConvertTimeStamp(time(), "FULL"),
              'ACTIVE_TO' =>  ConvertTimeStamp(time()+36000, "FULL"),
              'RENEWAL' => 'N',
              'NAME' => 'SERVERiST',
              'SORT' => 1,
              'MAX_DISCOUNT' => 100,
              'VALUE_TYPE' => 'F',
              'VALUE' => 100,
              "CURRENCY" => $basePrice[CURRENCY],
              'COUPON' => 0,
              'COUPON_ONE_TIME' => 0,
              'COUPON_ACTIVE' => 0,
              
          ) ; 
 }