smartofrm does not generate spool when run in background mode.?

Following print prameters are being provided but the smartform is not showing any SPOOL where as the jobs gets successfully executed.

CONTROL-NO_DIALOG = 'X'.

CONTROL-GETOTF = 'X'.

CONTROL-PREVIEW = 'X'.

OUTPUTOPTIONS-TDNOPREV = 'X'.

OUTPUTOPTIONS-TDDEST = G_PRINTER-TDDEST.

OUTPUTOPTIONS-TDNEWID = 'X'.

OUTPUTOPTIONS-TDNOPRINT = ' '.

OUTPUTOPTIONS-TDIMMED = ' '.

Pl advise.

Ven