Dear Manasa
1.) for "Labelworkbench": is this the so called "pdf preview" which you show in the pic? Or is this a "WWI" preview (may be take a look to this thread: SAP GLM PDF generation | SCN)? This is a "major" difference;
what happens it you "just" print the label (and forget aboput the "preview"); is the version printed?
2.) Do you use SAP standard symbol to retrieve the version number?
PS: according to the thread as inserted: did you "enhanced" GLM+ using the BADI as mentioned there? If this is really a "pdf" preview and you have not enhanced SAP EHS GLM: then may be start OSS dialog. It is probable that you will not get "all" kind of information in this preview (e.g. BAR Code etc.) but you will get only the "most" important one
I do not have any experience here.
C.B: