Trying to backtest multiple custom indicator variations at once | Forex Factory

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Trying to backtest multiple custom indicator variations at once

  • #1
  • First Post: Jan 20, 2016 6:08pm Jan 20, 2016 6:08pm
I'm attempting to backtest several versions of a custom indicator in one test.

Although it seems to work in backtesting, it gets an error alert in live trading that says "custom indicator must be a string". I know what the error is, and what it means. However, I would like to work around it, so I can still attain the objective of this feature.

I want to be able to test multiple versions of indicators in one backtest by assigning a number to each version of the indi and then test it within the external variables.

Is this a critical error? Will it affect or nullify entry signals based on the indicator? Other EA functions such as order modification are working live.

Has anyone ever worked around this, and does anyone know how I could implement the idea below?

I don't want want to strip this feature if possible.

Inserted Code
extern int UseIndiVersion = 1;
string UseIndi;
 
if (UseIndiVersion == 1) UseIndi = "RRTA";
if (UseIndiVersion == 2) UseIndi = "RRTA2";
 
if ((EntryFilter == 1) && (OrdersTotal() == 0) && (ChartSymbol() == Trade)
&& (iCustom(NULL,CTF,UseIndi,period,v,0,SigBar) > 0) && (iCustom(NULL,CTF,UseIndi,period,v,1,SigBar) == 0)
&& (iCustom(NULL,CTF,UseIndi,period,v,0,SigBar+PrevBar) == 0) && (iCustom(NULL,CTF,UseIndi,period,v,1,SigBar+PrevBar) > 0))
{fBuy1(); Print(TimeToString(TimeCurrent())," ", "UpSigBar=",iCustom(NULL,CTF,UseIndi,period,v,0,SigBar)," ","DnSigBar=",iCustom(NULL,CTF,UseIndi,period,v,1,SigBar));}
  • #2
  • Last Post: Jan 21, 2016 9:26am Jan 21, 2016 9:26am
For backtesting the code seems to work. However, if the EA is put on a live trading server, it will generate the "custom indicator must be a string" message. It still functions but not sure if the error will negatively affect the operation in a live environment, so I decided to strip the feature for the live EA, and just use it for testing only. The testing gives the same end result with or without the feature, so I don't need it on a live server. But it's still nice to know if I could run it without concern, even with the message and even better would be to know a work around for the code above that would not generate the message. Btw, the message does not show up in the backtest journal, only on a live server environment, after an order is modified.
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