Thread: How to backtest EAs ?

okay, this is seen like a stupid question but i real need help for this one.

how do you backtest those eas ? everytime i try to backtest a ea it either give me this error "2008.12.16 21:02:45 TestGenerator: unmatched data error (volume limit 132 at 2008.11.26 23:00 exceeded)
" or the other error 130, i try alot eas that i download from this forum and none of them seen to work for me, I set it to every tick and for all the time frames still dont work, can anybody help me

How can I make backtest and save Optimization Report as in this post http://www.tradingsystemforex.com/41-post1.html

Originally Posted by funyoo

The error 130 is generated when the SL or the TP is too short (min 15 for the SL, min 10 for the TP)

If you use this line of code between calculating your SL and using its value in the OrderSnd() function.

For long positions:

Code:

if ( SL > ( Bid - MarketInfo(Symbol(),MODE_STOPLEVEL)*Point )) {SL = Bid - MarketInfo(Symbol(),MODE_STOPLEVEL)*Point ;}

For short positions:

Code:

if ( SL < (Ask + MarketInfo(Symbol(),MODE_STOPLEVEL)*Point) ) {SL = Ask + MarketInfo(Symbol(),MODE_STOPLEVEL)*Point ;}

Originally Posted by funyoo

The error 130 is generated when the lots is under the minimum lots size allowed by the broker. If you are on Alpari UK, you have to multiply the SL, TP and TS by 10.

These lines of code should be used to ensure that the lots are not less than the minimum size allowed by your broker:

Code:

  double Lot=0;
  double MinLotSize=0;
  MinLotSize = MarketInfo(Symbol(),MODE_MINLOT);

........ calculate your lot size here ..........

  if(Lot < MinLotSize) 
    {
       Lot = MinLotSize;

You should also do the same for MaxLotSize.

Hello
I begin with Mt4, Why experts take a multitude of orders after? See image Ci joined
Excuse my bad English
Thank you

Hi Funyoo
Thank you for the answer, I will check that. Cheer for your forum, it is very well
Best regards

Hi Funyo
Could you please tell me what data supplier you use for your back tests..

Johnno