double DifferencePositionMarket(int f_ticket) // ticket
  {
   for(int i=OrdersTotal()-1; i>=0; i--)
      if(OrderSelect(i,SELECT_BY_POS,MODE_TRADES))
         if(OrderTicket()==f_ticket)
           {
            int f_type=OrderType();
            if(f_type==OP_BUYLIMIT || f_type==OP_SELLLIMIT ||
               f_type==OP_BUYSTOP  || f_type==OP_SELLSTOP)
               return DBL_MAX;
            //---
            if(f_type==OP_BUY)
               return MarketInfo(OrderSymbol(),MODE_BID)-OrderOpenPrice();
            if(f_type==OP_SELL)
               return MarketInfo(OrderSymbol(),MODE_ASK)-OrderOpenPrice();
           }
   return DBL_MAX;
  }