money management && lotoptimized() for help!

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I'd like to confirm my trade lot, and use code as follow:

double LotsOptimized()
  {
   double lot;//=Lots;
   int    orders=HistoryTotal();     // history orders total
   int    losses=0,wins=0;  
   int    b,c;
   b=iATR(NULL,0,233,0); 
   c=AccountLeverage();               // number of losses orders without a break
//---- select lot size
   Print(MarketInfo(Symbol(), MODE_LOTSIZE));
   Print(MarketInfo(Symbol(), MODE_MINLOT));
   Print(MarketInfo(Symbol(), MODE_LOTSTEP));
   Print(MarketInfo(Symbol(), MODE_MAXLOT));
   Print("this accountleverage is",c);
   if(b!=0)  
   lot=NormalizeDouble(AccountFreeMargin()*MaximumRisk/10*b*10000.00*c,2);
   if(lot<0.01) lot=0.01;
   return(lot);
  }
accountfreemargin()=10,000 MaximunRisk=0.02 but I found it couldn't run normally, it always use 0.01 trading.My MM is 5 digits price,so 1 Point stands 1USD,and b usually < 0.001.I think my method is correct,but the result go wrong.Any help would be great,TKS!
 
univetsity:

I'd like to confirm my trade lot, and use code as follow:

accountfreemargin()=10,000 MaximunRisk=0.02 but I found it couldn't run normally, it always use 0.01 trading.My MM is 5 digits price,so 1 Point stands 1USD,and b usually < 0.001.I think my method is correct,but the result go wrong.Any help would be great,TKS!


I think you should declare:


   double b;
   int    c;
   b=iATR(NULL,0,233,0); 
   c=AccountLeverage();               // number of losses orders without a break


Because iATR give you a double value less than zero if I'm not wrong.

 
acushnir:


I think you should declare:



Because iATR give you a double value less than zero if I'm not wrong.



great,you are correct!

I found use b and c the position will always 0.01,haven't find the cause,so wirte a new version as follow:

I found use b and c the position will always 0.01,haven't find the cause,so wirte a new version as follow:
double LotsOptimized()
  {
   double b,lot;//=Lots;
   int    orders=HistoryTotal();    
   int    losses=0,wins=0;  
   int    c,e,f,d;
   b=iATR(NULL,0,60,0); 
   c=AccountLeverage(); 
   
   d=AccountFreeMargin();//I wanna use it describe account's principal,but couldn't how to
   if(orders>=1)
   {e=AccountFreeMargin(); }            
   Print(MarketInfo(Symbol(), MODE_LOTSIZE));
   Print(MarketInfo(Symbol(), MODE_LOTSTEP));
   Print(MarketInfo(Symbol(), MODE_MAXLOT));
   Print("this accountleverage is",c);
   if(d!=0)  
   lot=NormalizeDouble((e*MaximumRisk/2000)*(1+3*(e/d-1)),2);//if profitiable,increase position,otherwise,the vice
   if(lot<0.01) lot=0.01;
   return(lot);
  }
but the first order's position still be 0.01, these follow will be normal,don't know why. And I know the d==e in my code,so e/d always=1, but I wanna use d stands principal,but how do?TKS!
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