I Use Infor ERP LN(BW8.4a.6(Unicode))

Label : tdinv9213.003.cst
Description: Zero Inventory Over XXX Days

select tdinv001.exdn,tdinv001._index1
from tdinv001
where tdinv001._index1 = 1
order by tdinv001._index1
selectdo
XXX = exdn
selectempty
XXX = 0
endselect

How do ! How Carry Out! Please Help !