there is vat window in my smartform.
there are vat codes like 0,z,1
for '0' vat code there is vat rate as 0.00%
for '1' vat code there is vat rate as 17.50%
for 'z' vat code nothing rate is there but it should be there so that the enduser can put any vat percentage in future
could anybody help me in giving the procedure for the coding for this