Hello, any idea on how to access some POI functions within JasperReports. I'm trying to have a crosstab with as a content the result of the PMT function. I've added the POI 3.9 in my classpath and created a dynamic field with the following content new org.apache.poi.ss.formula.functions.FinanceLib().pmt($P{PAR_INTERESTRATE}, $F{duration}, $F{catalogprice}, $F{catalogprice_rv}, false) => returns 'The constructor FinanceLib() is not visible' I've tried directory org.apache.xxxx.pmt without the new but this also does not work. Any idea on how this might be possible. Or maybe an alternative way to calculate the PMT value THx