The Visual Manufacturing variable listing is reserved for a Logicity for Visual Manufacturing license which includes pre-designed Crystal Reports and Logicity Solution Files for the Visual Manufacturing application. These variables work differently and do not auto populate like the Date and Time and the System Functions variables. The Visual Manufacturing variables are technically simply suggested names that match the pre-designed reports and are populated using command line variables:
"C:\Program Files (x86)\SaberLogic\Logicity\Logicity Desktop.exe" "C:\Logicity\Solution File Name.rrd" MYPARAMETER="John Smith"
If you should want to see the variable listing, simply point and view the Date and Time or the System Functions listing first and then point to Visual Manufacturing: