[amibroker] CustomBackTest / SetForeign / ROC Problem

["senior_banana" <senior_banana@xxxxxxxxx>]

I'm trying to use ROC() on a per bar basis, but all I get is zero.

Abbreviated example below, but
 - C[bar] works as expected.
 - ROC(C) gives the same result for every bar (as expected)
 - ROC(C[bar]) gives me Zero.  I would expect this to give me ROC for that bar.  Is there a way to do that?

Thanks,
Ryan


SetCustomBacktestProc("");

if (Status("action") == actionPortfolio) {
	barDates = DateTime();

	bo = GetBacktesterObject();
	bo.PreProcess();

	for (bar = 0; bar < BarCount; bar++) {
		barDate = barDates[bar];

		for (sig = bo.GetFirstSignal(bar); sig; sig = bo.GetNextSignal(bar)) {
			if (sig.IsEntry() && sig.IsLong()) {
				SetForeign("XLE");
	
				//THIS NUMBER IS ALWAYS ZERO???
				Var1 = ROC(C[bar]);

				_TRACE(NumToStr(bar)+" "+NumToStr(C[bar])+" "+NumToStr(Var1));
	
				RestorePriceArrays();	
			}
		}
		bo.HandleStops(bar);
		bo.UpdateStats(bar, 1);
		bo.UpdateStats(bar, 2);
	}
	bo.PostProcess();
}

Buy = C > MA(C,300);
Sell = C < MA(C,300);



------------------------------------

**** IMPORTANT PLEASE READ ****
This group is for the discussion between users only.
This is *NOT* technical support channel.

TO GET TECHNICAL SUPPORT send an e-mail directly to 
SUPPORT {at} amibroker.com

TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at
http://www.amibroker.com/feedback/
(submissions sent via other channels won't be considered)

For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
http://www.amibroker.com/devlog/

Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/amibroker/

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    http://groups.yahoo.com/group/amibroker/join
    (Yahoo! ID required)

<*> To change settings via email:
    mailto:amibroker-digest@xxxxxxxxxxxxxxx 
    mailto:amibroker-fullfeatured@xxxxxxxxxxxxxxx

<*> To unsubscribe from this group, send an email to:
    amibroker-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/