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.