Sending the smartform output to SPOOL

Hi,

How do I create a spool request with the smartform out put? I have passed the following parameters, but it still does not create a spool request.

data: W_CTRLOP TYPE SSFCTRLOP,

W_COMPOP TYPE SSFCOMPOP.

W_CTRLOP-LANGU = LS_CONTROL-LANGU.

W_CTRLOP-GETOTF = 'X'.

W_CTRLOP-NO_DIALOG = 'X'.

W_COMPOP-TDNOPREV = 'X'.

W_COMPOP-TDNOPRINT = 'X'.

W_COMPOP-TDDATASET = 'VENEVA'.

w_COMPOP-TDDEST = 'UK24'.

W_COMPOP-TDNEWID = 'X'.

W_COMPOP-XSFOUTMODE = 'S'.

Thank you,

Geetha