EMA CROSSOVER MOVING AVERAGE ROBOT

//+------------------------------------------------------------------+
//EMA crossover Robot 15 Minutes
//+------------------------------------------------------------------+


extern int MagicNumber=10001;
extern double Lots =0.01;
extern double StopLoss=0;
extern double TakeProfit=5;
extern int TrailingStop=0;
extern int Slippage=3;
//+------------------------------------------------------------------+
//    expert start function
//+------------------------------------------------------------------+
int start()
{
string signal="";
  double MyPoint=Point;
  if(Digits==3 || Digits==5) MyPoint=Point*10;
 //current chart, current period, 20 candles, No shift, simple , close price
double SlowMovingAverage = iMA (NULL,0,20,0,MODE_EMA,PRICE_CLOSE,0);
//current chart, current period, 20 candles, No shift, simple , close price
double LastSlowMovingAverage = iMA (NULL,0,20,0,MODE_EMA,PRICE_CLOSE,1);

//current chart, current period, 10 candles, No shift, simple , close price
double FastMovingAverage = iMA (NULL,0,10,0,MODE_EMA,PRICE_CLOSE,0);
//current chart, current period, 10 candles, No shift, simple , close price
double LastFastMovingAverage = iMA (NULL,0,10,0,MODE_EMA,PRICE_CLOSE,1);
//--------------------------------------------------------------------
 if ((LastFastMovingAverage < LastSlowMovingAverage) && (FastMovingAverage > SlowMovingAverage))
{
//set the signal variable to buy
signal="buy";
}
//if the moving average above the current price
if ((LastFastMovingAverage > LastSlowMovingAverage) && (FastMovingAverage < SlowMovingAverage))
{
//set the signal variable to sell
signal="sell";
}
//chart output for the signal
Comment ("The current signal is :",signal);

 double TheStopLoss=0;
  double TheTakeProfit=0;
  if( TotalOrdersCount()==0 )
  {
     int result=0;
     //if the fast SMA is now above
if ((LastFastMovingAverage < LastSlowMovingAverage) && (FastMovingAverage > SlowMovingAverage)) // Here is your open buy rule
     {
        result=OrderSend(Symbol(),OP_BUY,Lots,Ask,Slippage,0,0,"EMA crossover Robot 15 Minutes https://forexwithcandlestick.blogspot.com",MagicNumber,0,Blue);
        if(result>0)
        {
         TheStopLoss=0;
         TheTakeProfit=0;
         if(TakeProfit>0) TheTakeProfit=Ask+TakeProfit*MyPoint;
         if(StopLoss>0) TheStopLoss=Ask-StopLoss*MyPoint;
         OrderSelect(result,SELECT_BY_TICKET);
         OrderModify(OrderTicket(),OrderOpenPrice(),NormalizeDouble(TheStopLoss,Digits),NormalizeDouble(TheTakeProfit,Digits),0,Green);
        }
        return(0);
     }
     //if the fast SMA is now above
if ((LastFastMovingAverage > LastSlowMovingAverage) && (FastMovingAverage < SlowMovingAverage)) // Here is your open Sell rule
     {
        result=OrderSend(Symbol(),OP_SELL,Lots,Bid,Slippage,0,0,"EMA crossover Robot 15 Minutes https://forexwithcandlestick.blogspot.com ",MagicNumber,0,Red);
        if(result>0)
        {
         TheStopLoss=0;
         TheTakeProfit=0;
         if(TakeProfit>0) TheTakeProfit=Bid-TakeProfit*MyPoint;
         if(StopLoss>0) TheStopLoss=Bid+StopLoss*MyPoint;
         OrderSelect(result,SELECT_BY_TICKET);
         OrderModify(OrderTicket(),OrderOpenPrice(),NormalizeDouble(TheStopLoss,Digits),NormalizeDouble(TheTakeProfit,Digits),0,Green);
        }
        return(0);
     }
  }

  for(int cnt=0;cnt<OrdersTotal();cnt++)
     {
      OrderSelect(cnt, SELECT_BY_POS, MODE_TRADES);
      if(OrderType()<=OP_SELL && 
         OrderSymbol()==Symbol() &&
         OrderMagicNumber()==MagicNumber
         )
        {
         if(OrderType()==OP_BUY)
           {
            if(TrailingStop>0)
              {               
               if(Bid-OrderOpenPrice()>MyPoint*TrailingStop)
                 {
                  if(OrderStopLoss()<Bid-MyPoint*TrailingStop)
                    {
                     OrderModify(OrderTicket(),OrderOpenPrice(),Bid-TrailingStop*MyPoint,OrderTakeProfit(),0,Green);
                     return(0);
                    }
                 }
              }
           }
         else
           {
            if(TrailingStop>0)
              {               
               if((OrderOpenPrice()-Ask)>(MyPoint*TrailingStop))
                 {
                  if((OrderStopLoss()>(Ask+MyPoint*TrailingStop)) || (OrderStopLoss()==0))
                    {
                     OrderModify(OrderTicket(),OrderOpenPrice(),Ask+MyPoint*TrailingStop,OrderTakeProfit(),0,Red);
                     return(0);
                    }
                 }
              }
           }
        }
     }
   return(0);
}

int TotalOrdersCount()
{
  int result=0;
  for(int i=0;i<OrdersTotal();i++)
  {
     OrderSelect(i,SELECT_BY_POS ,MODE_TRADES);
     if (OrderMagicNumber()==MagicNumber) result++;

   }
  return (result);
}