eval formula node vi cannot work with simple math functions

[astroboy]

Hi I have problem using eval formula node.

And it produces error.

The formula is AI0=AI0-AI6; AI1=AI1-AI6; AI2=AI2-AI6; AI3=AI3-AI6; AI4=AI4-AI6; AI5=AI5-AI6;

Pls see the attached. I am using LV 7.1

Pls help. Will be grateful for your help

Clement

[RavensFan · Accepted solution]

See if this document explains your problem.

The problem seems to be the names you gave to your variables.

I found this document after doing a search on the forums for the error code 23083.

[altenbach]

Yes, the problem are your variable names.

Can you give us a bit of background why you want to do such a complicated and inefficient method for such a simple operation. The same could be done trivally with exactly three primitives (index array, array subset, subtract) and no purple at all.

[astroboy]

Hi Raven Fans and Altenbach

Thanks now I understand.

Clement