Please take a look at this

Discount has ,00 but why isn't there any ,00 for other fields?
For Sub Total what we did was
sum(/M3OutDocument/DataArea/Document/Subdocument/Lines/Line/Custom/OBLNA2)
For Total (Rp) we did
VFLNAM+(/M3OutDocument/DataArea/Document/DocumentTotal/VFFEAM)
is it possible that the decimals are not showing because we are using some sort of formula?