Problem with VWMA

[bibulous]

I am currently encountering the following problem while trying to build a smoothed VPCI indicator.

21.05.2008 17:32:49;Default;Error on calling the 'OnBarUpdate' method for indicator 'VWMA' on bar 1: Object reference not set to an instance of an object.;

The VPCI implementation is the one posted here:

http://www.traders.com/Documentation/FEEDbk_docs/Archive/072007/TradersTips/TradersTips.html#ninja

The OnBarUpdate code for my indicator is:
VPCI.Set(VolumePriceConfirmation(LongTerm, ShortTerm)[0]);
SmoothedVPCI.Set(VWMA(VPCI, Period)[0]);

Any ideas?

[NinjaTrader_JoshP]

Thanks for bringing this up. We will look into it.

[NinjaTrader_Dierk]

The VWMA only runs on bars series, since it's basically a calculation based on volume and the VPCI is just an indicator and has no volume (and no open, high, low, close) whatsoever.

[bibulous]

Thanks, that makes perfect sense..