[LemuelCRA]

Hello, I'm working in Tecplot 360 EX 2018 R2 and am trying to set all values of a specific variable to NaN for just one zone. My aim is to label nodes in one zone without cluttering the view with labels from another. That's why I thought maybe setting NaNs could do the 'blanking' job.

Specifically, I want to set the variable {Head} to NaN in a particular zone. I attempted using the Specify Equations tool with the command:

{Head} = NaN

However, this results in an error:

Unrecognized Command. Error occurred near position marked with "@" below:
{Head} = @NaN

Has anyone encountered this or know of alternative methods to accomplish this? Any advice would be appreciated!
Thanks!