public function AddArticleIdToWishlist($sArticleId, $dAmount = 1)
    {
        $dNewAmountOnList = 0;
        $oWishlist = &$this->GetWishlist(true);
        $dNewAmountOnList = $oWishlist->AddArticle($sArticleId, $dAmount);

        return $dNewAmountOnList;
    }