If you change the quantity, the program will  update the contents of the Znesek vrstice field. The contents of the Znesek popusta na racunu field will be deleted if you change the quantity.  This means that the invoice discount amount will have to be recalculated.
Če spremenite količino, program posodobi vsebino polja Znesek vrstice. Vsebina polja Znesek popusta na računu pa se ob spremembi količine izbriše. To pomeni, da je treba znesek popusta na računu ponovno izračunati.