VOLMA Syntax Clarification

[Spiderbird]

Hi there,

I'm attempting to use VOLMA in my scripts but it's not working. I'm using:

double Volume_Short = VOLMA(50);
double Volume_Long = VOLMA(100);

And the editor is coming back with:
An object reference is required for non-static field, method or property....

What's wrong with my syntax here?

[NinjaTrader_PaulH]

Hello Spiderbird,

Thanks for your post.

The statements are trying to assign the entire series of VOLMA() into a single double.

Please add a barsAgo index to pull the specific bars VOLMA value, like this: double Volume_Short = VOLMA(50)[0];

Reference: https://ninjatrader.com/support/help...rage_volma.htm

[Spiderbird]

Hi Paul!

Thanks for that guidance. It worked, but I also discovered that I needed to place those defintions in the OnBarUpdate area:

protected override void OnBarUpdate()
{

double Volume_Short = VOLMA(50)[0];
double Volume_Long = VOLMA(100)[0];

Before, I was declaring them in the OnStateChange area, which was causing errors even if I had added the [0] component.