//+--------------------------------------------------------------------------------------------------+
//|                                 Sell StopLoss Target Price.mq4                                 |
//+--------------------------------------------------------------------------------------------------+

#property show_confirm  // comment out this line to eliminate the confirmation box
//+------------------------------------------------------------------+
//| script program start function                                    |
//+------------------------------------------------------------------+
// edit these values as desired below:
extern double Lots =             1.0;
extern int stoploss =            400;
extern int takeprofit =          100;
extern int Slippage =            7;
extern int MagicNumber =         0;

int start()
  {
//----
   //////////////////////////////////////////////////////////////////
   // Order Entry section
   /////////////////////////////////////////////////////////////////

   int ticket =-1;
   datetime Exp = 0;
   int retries = 0;
   while(true) {
      while(IsTradeContextBusy()) Sleep(100);
      RefreshRates();
      if(IsConnected() == true)
       ticket=OrderSend(Symbol(),OP_SELL,Lots,Bid,Slippage,0.0,0.0,"Sell_SL_TP",MagicNumber,0,Lime);
      if (ticket >=0) break; // valid order placement
      if (ticket == -1) { 
         int err = GetLastError();
         Print("Entry Error #: " + err );
         if (err == 2 || err == 3 || err == 5 || err == 64 || err == 65 || err == 131
          || err == 132 || err == 133 || err == 134 || err == 139 || err == 148 
          || err == 149 || err == 150) return(0);
          Sleep(3000); // take a short break then retry
          retries += 1; // increment retries
          if (retries >5) return(0); // end after 15 seconds of retries 
      }
   }

   //////////////////////////////////////////////////////////////////
   // Stop Loss and Profit Target / Take Profit Modification
   /////////////////////////////////////////////////////////////////
   Sleep(3000);
   retries = 0;
   // now attempt to alter the stop loss and take profit
   bool selected = OrderSelect(ticket, SELECT_BY_TICKET, MODE_TRADES);
   while(selected) {
      bool modified = OrderModify(ticket, OrderOpenPrice(), OrderOpenPrice() + stoploss * Point, OrderOpenPrice() - takeprofit * Point, 0, CLR_NONE);
      if (modified == true) return(0);
      err = GetLastError();
      Print("Order Modification Error #: " + err );
      if (err == 2 || err == 3 || err == 5 || err == 64 || err == 65 || err == 131
       || err == 132 || err == 133 || err == 134 || err == 139 || err == 148 
       || err == 149 || err == 150) return(0);
      Sleep(3000); // take a short break then retry
      retries += 1; // increment retries
      if (retries >5) return(0); // end after 15 seconds of retries 
   }
//----
   Print("Unable to select order for SL/TP modification");
   return(0);
  }