Losing study values in Playback

[hmmerritt]

I apologize if this has been discussed in another thread, but I just could not find it. When using tick Playback, I'm losing values for studies when I reload the efs file. For instance, I'm using:

var CCI_14_1 = study2.getValue(CCIStudy.CCI, -1)

The value of this variable goes to null if I reload the efs. Is this correct behavior?

[eSignal_JasonK]

Hello hmmerritt,

The CCI study will return null for the first 13 bars in the chart if the specified length is 14. It needs 14 bars before it can return a valid value if requesting getValue(CCIStudy.CCI, 0). On the 14th bar the -1 value will still be null. To prevent your formula from trying to evaluate any conditions on the null values when the study is reloaded, add a null check after you retrieve the value for the CCI like below. The return statement will exit the formula until CCI_14_1 is assigned to a valid number.

var CCI_14_1 = study2.getValue(CCIStudy.CCI, -1)
if (CCI_14_1 == null) return;  // null check 

[hmmerritt]

Thanks Jason. I appreciate the explanation.

[eSignal_JasonK]

You're most welcome.