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MM EA code help

  • #1
  • First Post: Aug 23, 2008 12:57pm Aug 23, 2008 12:57pm
Hi,

I think I have a good EA. But my problem for the moment is to write a good money management function.

Any advice or examples ?

Best Regards
Warren Benjamin
  • #2
  • Aug 23, 2008 2:21pm Aug 23, 2008 2:21pm
Hi,

I can give some example.

//-- external input
extern double LotsPercent = 2.0 // mean 2.0%

//-- pass variable
double LotSize;

void LotsCalc() {
if(MarketInfo(Symbol(),MODE_MINLOT) == 0.1) int LotsDigit = 1;
else if(MarketInfo(Symbol(),MODE_MINLOT) == 0.01) LotsDigit = 2;
double MinLots = NormalizeDouble(MarketInfo(Symbol(),MODE_MINLOT),LotsDigit);
double MaxLots = NormalizeDouble(MarketInfo(Symbol(),MODE_MAXLOT),LotsDigit);
double AcFrMar = NormalizeDouble(AccountFreeMargin(),2);

LotSize = NormalizeDouble(
(AcFrMar*(LotsPercent/100))/1000,LotsDigit);
;

if(LotSize > MaxLots) LotSize = MaxLots;
if(LotSize < MinLots) LotSize = MinLots;
}
  • #3
  • Edited 3:55pm Aug 23, 2008 2:25pm | Edited 3:55pm
Here is the MM code that I use (modified from Azmel's version):

//Money Management sequence
if (MoneyManagement)
{
if (Risk<1 || Risk>100)
{
Comment("Invalid Risk Value.");
return(0);
}
else
{
Lots=MathFloor((AccountFreeMargin()*AccountLeverage()*Risk*Point*100)/(Ask*MarketInfo(Symbol(),MODE_LOTSIZE)*MarketInfo(Symbol(),MODE_MINLOT)))*MarketInfo(Symbol(),MODE_MINLOT);
}
}

This one automatically detects Micro/Mini accounts.
  • #4
  • Aug 23, 2008 3:29pm Aug 23, 2008 3:29pm
Hi,

I like this one


double DefineLotSize() {
double lotMM = NormalizeDouble(MathCeil(AccountFreeMargin() * Risk / 1000) / 100,1);
if(AccountIsMicro==false) { //normal account
if (lotMM < 0.1) lotMM = Lots;
if ((lotMM > 0.5) && (lotMM < 1)) lotMM=0.5;
if (lotMM > 1.0) lotMM = NormalizeDouble(MathCeil(lotMM),1);
if (lotMM > 100) lotMM = 100;
} else { //micro account
if (lotMM < 0.01) lotMM = Lots;
if (lotMM > 1.0) lotMM = NormalizeDouble(MathCeil(lotMM),1);
if (lotMM > 100) lotMM = 100;
}
return (lotMM);
}
  • #5
  • Aug 25, 2008 4:27am Aug 25, 2008 4:27am
Hi,

Useful.

Any advice how I can do this ?

I want to risk let say 2 % of my "start balance" but then I'm ready to risk 50% of my gains.

So let say I risk 2% of my 10 000 and the trade is bad so I have
9950 after my first trade. I want to risk 2% again.
But if my first trade is ok and I have 10500 after my first trade I want to risk

2 % of 10 000 and 50% of 500.

Thanks for any advice and code samples.
  • #6
  • Mar 19, 2009 8:45am Mar 19, 2009 8:45am
Can someone help me,i would like to make instruction to my lot.
Something like below

my current code for Lots position only like this
Inserted Code
extern double Lots = 0.2;

but i want to apply this code that i get from 20_200expert ea.
Inserted Code
{
if (AccountBalance()>=300) lot=0.01;
if (AccountBalance()>=500) lot=0.02;
if (AccountBalance()>=800) lot=0.03;
if (AccountBalance()>=1000) lot=0.04;
if (AccountBalance()>=1300) lot=0.05;
if (AccountBalance()>=1600) lot=0.06;
if (AccountBalance()>=1800) lot=0.07;
if (AccountBalance()>=2100) lot=0.08;
if (AccountBalance()>=2400) lot=0.09;
if (AccountBalance()>=2700) lot=0.10;
if (AccountBalance()>=3000) lot=0.11;
if (AccountBalance()>=3300) lot=0.12;
if (AccountBalance()>=3500) lot=0.13;
if (AccountBalance()>=3785) lot=0.14;
if (AccountBalance()>=4058) lot=0.15;
if (AccountBalance()>=4332) lot=0.16;
}

Can someone show the correct code command so i can apply to my ea?
  • #7
  • Mar 19, 2009 11:10am Mar 19, 2009 11:10am
just place that chunk into your start() function and change all those "lot" to "Lots" OR change your "Lots" to "lot".
Programming for a better future.
  • #8
  • Last Post: Mar 19, 2009 12:34pm Mar 19, 2009 12:34pm
Quoting Zen_Leow
just place that chunk into your start() function and change all those "lot" to "Lots" OR change your "Lots" to "lot".
Oh man,that so easy!!! I million thanks to you Zen Leow!!
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