Second Time Series/Time Frame

[ATMtrader0001]

I would like to know if this is possible.

Can I add a Second Timeframe / Bar Series where I can make the period variable, like below.

BarSeries1SMA = SMA(BarsArray[1], iSMAPeriod);

To put a use case to it, I would like to confirm trend on a longer timeframe, but trade on the shorter timeframe and I would then be able to set the period in Optimization.

I am guessing no since I tried and got this message:
Unable to load bars series. Your NinjaScript may be trying to use an additional data series dynamically in an unsupported manner.

If this is not supported, how is this best accomplished?

[ATMtrader0001]

I can't seem to edit this with my current browser. The code I meant to past was this:
AddDataSeries(Data.BarsPeriodType.Minute, iMyTimeFrame);

[NinjaTrader_Gaby]

Hello ATMtrader0001,

Thank you for your post.

You can pass in a secondary series to an indicator and use a user input for the period (to be able to optimize this period input).

Please see the attached sample script.

Regarding this error, this can happen if you try to load data series dynamically. From the Help Guide:

"Arguments supplied to AddDataSeries() should be hardcoded and NOT dependent on run-time variables which cannot be reliably obtained during State.Configure (e.g., Instrument, Bars, or user input). Attempting to add a data series dynamically is NOT guaranteed and therefore should be avoided. Trying to load bars dynamically may result in an error similar to: Unable to load bars series. Your NinjaScript may be trying to use an additional data series dynamically in an unsupported manner."

https://ninjatrader.com/support/helpGuides/nt8/adddataseries.htm

Using an a variable for an AddDataSeries() parameter would be considered trying to load the data series dynamically, which is not supported.

Please let me know if you have any further questions.