Change with ATR from 8.0 to 8.5  [SOLVED]

Hi,
I'm having more issues with my compiling my scripts after moving to 8.5. It looks like the API for the ATR indicator has changed. Previously I was calculating ATR for a higher time frame by doing the following.

in Create()
m_avgtruerange = new AvgTrueRange(this,2);

in StartCalc()
m_avgtruerange.length = new Lambda<Int32>(delegate { return atrlength; });

in CalcBar()
(m_avgtruerange[1]*numatrs);


Now it appears in CalcBar I need to do something like:
double atr = this.AverageTrueRange(atrLength,2);

However, it is always returning the value based on the lower timeframe.

Any help would be appreciated.

Thanks,
-Rob

Hello Rob,

Here is how to calculate ATR on data2 in MultiCharts .Net 8.5.
AverageTrueRange interface will be extended in MultiCharts .NET 8.7 Beta 1

Thanks Henry, the script worked.

-Rob