This u can do it from front end or java code it's self why do want to do in drool file? coz that is easy and looks good. -- View this message in context: http://drools.46999.n3.nabble.com/Data-type-and-Date-format-vlidation-tp3950113p4017600.html Sent from the Drools: User forum mailing list archive at Nabble.com.