strategy to indicator runtime issue

[ct]

I am trying to convert an existing strategy I have to an indicator so I can use chart trader. It runs fine as a strategy no issues. I converted it by hand to an indicator, it compiles successfully. It uses a secondary added time frame.

When I add the indicator to the chart I get a run time error. This is the line of code I get the error on.
DrawRectangle("Rectangle_up_"+ '_' + CurrentBars[BarsInProgress], false, 0, BarLow, lineLength, BarHigh, Color.Green, Color.PaleGreen, opacity);

this is the error I get from the log:
Error on calling 'OnBarUpdate' method for indicator 'zones_9_ms_ind_ind' on bar 20702: zones_9_ms_ind_ind.DrawRectangle: startBarsAgo out of valid range 0 through -1, was 0.

The drawrectagle is hard coded for startBarsAgo = 0, I tried -1. same error.

The message says startBarsAgo range must be 0 to -1, and it is 0.

Last time i checked 0 is in the range of 0 to -1. Not sure how to fix this one.

[NinjaTrader_Bertrand]

ct, so basically the same code worked normally for you in the strategy but not after conversion to an indicator?

What checks for enough bars (CurrentBars[x]) are you running for all involved series in the indicator?

[ct]

Bertrand

I did have to add some logic for this. It was interesting I got dates farther back that the base chart time frame. This did not happen in the strategy. It would appear an added time frame date/time range is different in a strategy from an indicator.

Here is a code snippet. Do I need to check if the added time frame is referencing a time farther back than the lowest base chart date/time?

if (BarsInProgress < 1)
{
return;
}
if (BarsInProgress > 1

if (CurrentBar < MinBars)
{
return;
}

Yes if I put in high enough MinBars value the indicator works.

[NinjaTrader_Bertrand]

Yes ct, that could be the case - since you return out of any call to BIP 0 you should not need a dedicated check for this series.

[ct]

Bertrand

Got it. I will put in a check to not use ay times lower the base time frame. That seems to fix it. What is "BIP"?

[NinjaTrader_Bertrand]

That's just short for BarsInProgress - the bars series calling the OnBarUpdate().

[ct]

Got it. Not used to the acronym but know what is stands for well.