I have a JasperReport report of the sales document. I want to print "inclusive" if the price of the detail line is zero. For that purpose I put a static text field and in the print when expression :
$F{Unit_Price-price_unit}.equals(0.0)
$F{Unit_Price-price_unit} is the unit price report field ( it prints fine on the detail lines).
If I do the reverse
!$F{Unit_Price-price_unit}.equals(0.0)
the static text get printed on lines with a price != 0.
But in both cases the static text is never printed on the line where the price is zero.