HighLow Values of indicator in non-primary BarsArray

[sandman]

This draws a short horizontal line at the EMA20 of BarsArray1.

DrawLine("Tag1", false, 10, (EMA(BarsArray[1],20))[0], 0, (EMA(BarsArray[1],20))[0], Color.Red, DashStyle.Solid, 2);

How do I get to the High or Low of this EMA 20?

I tried
(EMA(High,BarsArray[1], 20))[0] and also (EMA(BarsArray[1],(High,20)))[0] - neither of which works. I would appreciate some help.

sandman

[NinjaTrader_ChelseaB]

Hello sandman,

Use the Highs collection with an index of 1.

Below is a public link to the help guide on Highs.

https://ninjatrader.com/support/helpGuides/nt7/highs.htm

In the scope of the class:
private EMA myEMA;

In OnStartUp():
myEMA = EMA(Highs[1], 20);

In OnBarUpdate():
if (BarsInProgress == 1)
Print(myEMA[0]);