//////
/* Here is the MM settings...look at notes...if set to 0 then ea will trade with a fixed lot size..the size specified 
   in the above "extern double Lots = 1.0;" line. Might want to change this to 0.1.
   If 1 then it will trade a fixed percentage of the account balance
   If 2 then it will use a fractional portion (not to sure on this one..must look at code again)
   If 3 then a fractional fixed size meaning 1 lot for every 500 in account or so...the 500 is set below
     in the LotsDepoForOne - i.e. How many lots for each deposit amount of = 
     
     You must play around with it..cannot remember exact settings but I likes the setting to trade 1 lot for each $xx in account.
     Easy to maintain a say 500:1 ratio with it.
  */   

extern int LotsWayChoice  = 3;    // Lot size selection: 
                                  //  0-fixed lot size, 
                                  //  1-% from deposit, 
                                  //  2-fractional proportional, 
                                  //  3-fractional fixed lot size, 
extern int LotsPercent=0;   // % from deposit 
extern int LotsDeltaDepo=500;  // factor of deposit increase 
extern int LotsDepoForOne=500;  // deposit size for 1 mini lot 
extern int LotsMax=100; // Max number of mini lots 


double ldLot;

ldLot = GetSizeLot();
         ticket = OrderSend(Symbol(),OP_SELL,ldLot,Bid,slippage,realSL,realTP,nameEA+" - Magic: "+magicEA+" ",magicEA,0,Red); // Sell

///////////////////////////////////////////////////////////////////////////////////////
// This part is the function where the lot size is calculated

double GetSizeLot() {  
  double dLot; 
  if (LotsWayChoice==0) dLot=Lots; 

  // fixed % from deposit 
  if (LotsWayChoice==1) { 
    dLot=MathCeil(AccountFreeMargin()/10000*LotsPercent)/10; 
  } 

  // fractional proportional 
  if (LotsWayChoice==2) { 
    int k=LotsDepoForOne; 
    for (double i=2; i<=LotsMax; i++) { 
      k=k+i*LotsDeltaDepo; 
      if (k>AccountFreeMargin()) { 
        dLot=(i-1)/10; break; 
      } 
    } 
  } 

  // fractional fixed 
  if (LotsWayChoice==3) { 
    dLot=MathCeil((AccountFreeMargin()-LotsDepoForOne)/LotsDeltaDepo)/10; 
  } 

  if (dLot<0.1)  dLot=0.1;
  if (dLot>LotsMax) dLot=LotsMax;
   
  return(dLot);  
  }

double AutoLots(int Risk, int StopLossInPips, double MIN_lots = 0.1, double MAX_lots = 5)
{
   int    Decimals = 0;
 
   double LotStep = MarketInfo(Symbol(), MODE_LOTSTEP);
   double LotSize = MarketInfo(Symbol(), MODE_LOTSIZE);
   double LotTickValue = MarketInfo(Symbol(), MODE_TICKVALUE);

   if(LotStep == 0.01)
      Decimals = 2;
   if(LotStep == 0.1)
      Decimals = 1;

   double LotsToRisk = ((AccountFreeMargin()*Risk)/100)/StopLossInPips;
   double Lots = StrToDouble(DoubleToStr(LotsToRisk/LotTickValue,Decimals));
  
   if (Lots < MIN_lots)
      Lots = MIN_lots;
   if (Lots > MAX_lots)
      Lots = MAX_lots;

   return(Lots);    
}