public static function GetDealCost($deal_id) { $res = 0; $sumtot = CArkaCrm::GetTotalDealCostForDeal($deal_id); $sumdiscount = CArkaCrm::GetDiscountForDeal($deal_id); $sumdiscount2 = CArkaCrm::GetDiscount2ForDeal($deal_id); $res = $sumtot - $sumdiscount - $sumdiscount2; return $res; }