Choose the value of the lot level martingale instead to multiply

 

Usage that code martingale which for multiplying a lot starting with a loss so forth till the MaxLotsAllowed

double CalculateLotSize()
{

   //Calculate Martingale lot size

   if (!UseMartingale) return(Lot);
   
   
   //Find most recent trade
   if (OrdersHistoryTotal() == 0) return(Lot);
   double SendLots = Lot;
   
   for (int cc = OrdersHistoryTotal() - 1; cc >= 0; cc--)
   {
      if (!OrderSelect(cc, SELECT_BY_POS, MODE_HISTORY) ) continue;
      if (OrderSymbol() != Symbol() ) continue;
      if (OrderMagicNumber() != MagicNumber) continue;
      if (OrderProfit() < 0)
      {
         double LotStep = MarketInfo(Symbol(),MODE_LOTSTEP);
         double digit = 0;
         if (LotStep == 0.1) digit = 1;
         if (LotStep == 0.01) digit = 2;
         SendLots = NormalizeDouble(OrderLots() * MartingaleLotMultiplier, digit);         
      }//if (OrderProfit() < 0)
      break;
   
   }//for (int cc = OrdersHistoryTotal() - 1; cc >= 0; cc--)
   
   //Check maximum lots allowed filter in the Martingale section
   if (SendLots > MaxLotsAllowed) SendLots = Lot;
   
   return(SendLots);

}//End double CalculateLotSize() 

I wanted to specifically choose the lot for each level martingale.

Example:

extern double  MartingaleL6=2.0;
extern double  MartingaleL7=4.4;
extern double  MartingaleL8=7.3;
extern double  MartingaleL9=10.8;
extern double  MartingaleL10=14.9;
extern double  MartingaleL11=19.9;
extern double  MartingaleL12=25.9;
extern double  MartingaleL13=33.1;
extern double  MartingaleL14=41.7;
extern double  MartingaleL15=52.0;
extern double  MartingaleL16=64.4;
extern double  MartingaleL17=79.3;
extern double  MartingaleL18=107.2;
extern double  MartingaleL19=128.6;
extern double  MartingaleL20=154.3;

Someone can help me, thanks

 
Someone?
 
double MartingaleLevel(double lastlot)    //pass lastlot parameter from your calculatelots() function
{
if(lastlot < martingaleL1)  return(martingaleL1); 
if(lastlot < martingaleL2)  return(martingaleL2);
if(lastlot < martingaleL3)  return(martingaleL3);
if(lastlot < martingaleL4)  return(martingaleL4);
//etc
if(lastlot < martingaleL20) return(martingaleL20);

return(0); //oops !! if we got here we probably just blew the account;
}
 
SDC:

looking at what you posted as I thought it would function more as my limited knowledge about mq4 could do not work.


I think it gave little information could you make it clearer

extern string  gen="----General inputs----";
extern double  Lot=0.01;
etc..
extern string  mi="====Martingale inputs----";
extern bool    UseMartingale=true;
extern double  MartingaleL6=2.0;
extern double  MartingaleL7=4.4;
extern double  MartingaleL8=7.3;
extern double  MartingaleL9=10.8;
extern double  MartingaleL10=14.9;
extern double  MartingaleL11=19.9;
extern double  MartingaleL12=25.9;
extern double  MartingaleL13=33.1;
extern double  MartingaleL14=41.7;
extern double  MartingaleL15=52.0;
extern double  MartingaleL16=64.4;
extern double  MartingaleL17=79.3;
extern double  MartingaleL18=107.2;
extern double  MartingaleL19=128.6;
extern double  MartingaleL20=154.3;

double CalculateLotSize()
{

   //Calculate Martingale lot size

   if (!UseMartingale) return(Lot);
   
   
   //Find most recent trade
   if (OrdersHistoryTotal() == 0) return(Lot);
   double SendLots = Lot;
   
   for (int cc = OrdersHistoryTotal() - 1; cc >= 0; cc--)
   {
      if (!OrderSelect(cc, SELECT_BY_POS, MODE_HISTORY) ) continue;
      if (OrderSymbol() != Symbol() ) continue;
      if (OrderMagicNumber() != MagicNumber) continue;
      if (OrderProfit() < 0)
      {
         double LotStep = MarketInfo(Symbol(),MODE_LOTSTEP);
         double digit = 0;
         if (LotStep == 0.1) digit = 1;
         if (LotStep == 0.01) digit = 2;
         SendLots = NormalizeDouble(OrderLots() * MartingaleLotMultiplier, digit);         
      }//if (OrderProfit() < 0)
      break;
   
   }//for (int cc = OrdersHistoryTotal() - 1; cc >= 0; cc--)
   
   //Check maximum lots allowed filter in the Martingale section
   if (SendLots > MaxLotsAllowed) SendLots = Lot;
   
   return(SendLots);

}//End double CalculateLotSize()
double SendLots = CalculateLotSize();
   //Long 
   if (trend == up)
   {
      if (!TradeLong) return;
                
      //Initial trade tp
      if (SendLots == Lot && FirstTradeTakeProfit > 0) take = NormalizeDouble(Ask + (FirstTradeTakeProfit * Point), Digits);
      //Tp for Martingale trades
      if (SendLots > Lot && SubsequentTakeProfit > 0) take = NormalizeDouble(Ask + (SubsequentTakeProfit * Point), Digits);
      if (StopLoss > 0) stop = NormalizeDouble(Ask - (StopLoss * Point), Digits);
      
      type = OP_BUY;
      price = Ask;
      SendTrade = true;

      
   }//if (Ask > 1000000)
   
   
   //Short
   if (trend == down)
   {
      if (!TradeShort) return;

      if (SendLots == Lot && FirstTradeTakeProfit > 0) take = NormalizeDouble(Bid - (FirstTradeTakeProfit * Point), Digits);
      //Tp for Martingale trades
      if (SendLots > Lot && SubsequentTakeProfit > 0) take = NormalizeDouble(Bid - (SubsequentTakeProfit * Point), Digits);
      if (StopLoss > 0) stop = NormalizeDouble(Bid + (StopLoss * Point), Digits);
      type = OP_SELL;
      price = Bid;
      SendTrade = true;      
 

   }//if (trend == down)
   if (SendTrade)
   {
      bool result = SendSingleTrade(type, TradeComment, SendLots, price, stop, take);
   }//if (SendTrade)
   
 

The code I gave you in my reply, is an example of a function to return the next one in a sequence of lot sizes held in global variables; martingaleL1 through martingaleL20. When you need to get the next lot size in that sequence pass to it, in a function call, the previous lot size. If you do not know how to do that read, functions

 
SDC:

The code I gave you in my reply, is an example of a function to return the next one in a sequence of lot sizes held in global variables; martingaleL1 through martingaleL20. When you need to get the next lot size in that sequence pass to it, in a function call, the previous lot size. If you do not know how to do that read, functions

SDC thanks for replying as I know the basics of basic MQL4, I tried over here unable to make it work here is the EA attached. If you can change what you have to change to work I thank you very much.

Because I think it'll be about 5 days trying to make it work pity me :)
Files:
 
Someone?
 
Carioca:
Someone?

" I think it'll be about 5 days trying to make it work pity me :) "

Would that be a reason to do it not at all ??

If you want someonelse to do it for you then placing a job at Jobs will help you more

If you open a job there for doing this i can help you also if you choose me when i also react as one of the developers

But SDC has given you already a big help here how to solve this problem

If you try to learn yourself to code mq4 and you need some help then you can ask here and with the hints we give

it will for you the help you can get here in how to code and learn to write own programs for MT4

This forum is not the place to ask for coding your programs for free

It is a forum for helping those programmers who wants to learn seriously creating own programs

The Book and some programs in Code Base might help you.

Although I have to warn you about Code Base not all programs there are written well

This Forum is to help you with solving a problem in how to code

I'm sure you can do this if you take the time to learn how to read and program mq4 language