Private Blocks

Hello,

I made my SAMPLE TYPE NUMBER into a private block so it will disappear when I don't have any info entered, but also appear when I do.  It doesn't seem to be working, I might have the wrong output condition entered in since I'm not familiar with the wording gINT uses.

This is the output condition for the private block:

I do have information entered for the sample type and number:

But in output it is missing: