Coding using specific ETF's

[smcclendon3]

Hello,
To introduce myself, I'm new to NinjaTrader; I have the free version now but plan on purchasing once I become more familiar with NinjaScript. I have a basic grasp so far, and have experience using MATLAB and Excel. As for my question:
I'm trying to develop a contrarian strategy using the VIX. I want to use VIX performance to produce orders on SPY. I'm getting a coding error on an if command.
CrossAbove("VIX", (Bollinger(Sdev, SMA)), 1)
EnterLong("SPY")

I'm getting a few errors but can't figur out what's wrong. Am I approaching this incorrectly? Should I declare SPY and VIX somewhere else? Let me know if you need more information.

Thanks

[NinjaTrader_Bertrand]

smcclendon3, thanks for the post and glad to see you using NinjaTrader for your strategy works.

What you would want to create is a so called MultiSeries strategy in our NinjaScript, we ship a dedicated example with the 'SampleMultiInstrument' script installed per default with NT - I would suggest to closely review it's structure first to get started.

More documentation on this topic can also be found here introducing the framework you would operate in : http://www.ninjatrader.com/support/h...nstruments.htm