Adding an Indicator of an Indicator in my code

[freewind]

Hi,

I'm trying to get access withing my indicator code to an EMA of the VOL of my instrument.
How can I add it to my code?

EMA(VOL(WHAT [COLOR=Red][B]DataSeries[/B][/COLOR] I Need to enter here?) , 14);

I attached an image of what I'm trying to get access to in the chart and it is the yellow line in the volume panel.

Thank in advance!

[NinjaTrader_Bertrand]

You can just work with this snippet - double myVol = EMA(VOL(), 14)[0];

[freewind]

Thanks Bertrand it works fine.

But if I want to insert it as I described above how can I refer to the Data Series of the main instrument?

[NinjaTrader_Bertrand]

You would for example pass the Close in, or Input for more flexibility -

http://www.ninjatrader.com/support/helpGuides/nt7/input.htm