Breakeven loss adjustment for a group of trades.

The attached code segment below, takes a specific symbol and side (BUY/SELL) and calculates the average price for the group of trades and applies a breakeven so hat the sum of the trades closes at breakeven (closes at the same price).

I need a version of this BEP2 code segment I need a dollar value offset added into the price, for example if a $50 loss is specified, the applied TP to the group of open trades on the sell side, the total loss for the group of trades would be $50.

Code:

//________________________________________________________________________ 

void BEP2(string symb1, int orderType)

  {

   double avgbuy=0,avgsell=0;

   double totpricesell=0,totpricebuy=0;

   int OrderBuy=0,OrderSell=0;

   double lotbuy=0,lotsell=0;

   int ticket=0;

   double val=0;

   double poin = MarketInfo(symb1,MODE_POINT);

   int    digit= (int)MarketInfo(symb1,MODE_DIGITS);

   for(int cnt = 0; cnt < OrdersTotal(); cnt++)

     {

      if(OrderSelect(cnt, SELECT_BY_POS, MODE_TRADES))

        {

         if(OrderSymbol()==symb1 && (OrderMagicNumber()>= magic))

           {

            if(OrderType()==OP_BUY)

              {

               OrderBuy++;

               lotbuy+=OrderLots();

               totpricebuy += (OrderOpenPrice()) * OrderLots();

              }

            if(OrderType()==OP_SELL)

              {

               OrderSell++;

               lotsell+=OrderLots();

               totpricesell += (OrderOpenPrice()) * OrderLots();

              }

           }

        }

     }

   if(OrderSell > 0 && totpricesell!=0)

      avgsell = NormalizeDouble(totpricesell / lotsell, digit);

   if(OrderBuy > 0 && totpricebuy!=0)

      avgbuy = NormalizeDouble(totpricebuy / lotbuy, digit);

   for(int cnt = 0; cnt < OrdersTotal(); cnt++)

     {

      if(OrderSelect(cnt, SELECT_BY_POS, MODE_TRADES))

        {

         if(OrderSymbol()==symb1 && (OrderMagicNumber()>= magic) && (StringSubstr(OrderComment(),0,4)=="to #" || StringSubstr(OrderComment(),0,6)=="from #"))

           {

            if(OrderType()==OP_BUY)

              {

               ticket=OrderModify(OrderTicket(),OrderOpenPrice(),OrderStopLoss(),NormalizeDouble(avgbuy+CommisionPoint*poin,digit),0,clrYellow);

              }

            if(OrderType()==OP_SELL)

              {

               ticket=OrderModify(OrderTicket(),OrderOpenPrice(),OrderStopLoss(),NormalizeDouble(avgsell-CommisionPoint*poin,digit),0,clrYellow);

              }

           }

        }

     }

   if(ticket>0)

      ok++;

  }