Hi Anton, I'm again asking your help. maybe there's something wrong or that I miss. 1) I changed the internationalized setting on the Log-in page and now everything appears translated (labels, button ecc.). 2) I edited the jasperserver_config.properies and I've modified calendar.date.format and all the other lines, belows are the new lines date.format=dd-MM-yyyy datetime.format=dd-MM-yyyy HH:mm calendar.date.format=dd-mm-yy calendar.datetime.format=dd-mm-yy hh:mm calendar.time.format=hh:mm I do not if when changing the language from the main Log-in page, Jasper uses jasperserver_config.properies or jasperserver_config_it.properies, so I've edited and modified also jasperserver_config_it.properies file like the other. But I have this problem: when I open the report labels are translated in italian, calendar is italian but after clicking on close buttom of the popup calendar, date is copied in the field in the wrong way, ex. 2012-10-18 and not in dd-mm-yyyy format If I'm trying to start the report I have a this message "Specify a valid value for type Date." as the format is not correct. Obviously i can edit and manually change in 18-10-2012 but it's not want I want ... I'd like that the calendar close button would work properly .... is there something that I miss? I stop and restart tomcat but with no positive result. I saw that there is also a file named calendar_it.properties ... must I change some values in it? For Exemples the last lines # date formats CAL_def_date_format=%Y-%m-%d CAL_tt_date_format=%a, %b %e CAL_week=wk CAL_time=Time: CAL_hour=Hour CAL_min=Minute CAL_now=Now