Hi Thom,
You might try the single quotes ','. I have never used the ":=" so I do not know if that is part of the problem.

However try the following:

LOCAL stringVar lcRetVal = ' ' ; \\'Space' so you can have the variable as char
LOCAL stringVar lcSep = ' ' ; \\'Space' so you can have the variable as char

IF Length(Trim({ipheader.QUALSURVEY})) > 0 and Length(Trim({ipheader.QSVCNAME})) > 0 then
lcSep = ',' ;

lcRetVal = Trim({ipheader.QSVCNAME}) + lcSep + Trim({ipheader.QUALSURVEY})

I hope this helps

Andy Eggers