[Logic] Print Field Help

[logic@mailman.qth.net]

I always go brain dead when I start tinkering with my qsl label report 
files.  I have a user-defined field called SATNAME into which I enter 
the name of the satellite that I use when making satellite QSOs.  I want 
to enter an expression onto my qsl label report such that if the field 
has data in it, to print it onto the label and if not then to print 
nothing.  I also check the SatMode box on the log form when entering a 
satellite contact into the log.  I do the same, printing onto the label, 
with the Via variable, printing the QSL via info if that field has data 
in it but the SATNAME is not a standard variable, so help!!  Tnx in 
advance, Phil  KB9CRY