i am able to fire drl file as a string such that the string is in a single line but not a drl file as below, package com.sample; import com.sample.BackDated; global com.sample.updateBDNB t; expander Back.dsl; rule "BACK DATE_3" when There is an application with "NB" There is a privilege of "BackDatedNB" then Backdated is allowed for "3" days end It throws me the following error, org.drools.rule.InvalidRulePackage: unknown:0:-1 mismatched token: [@0,0:0='<no text>',<-1>,0:-1]; expecting type EOL at org.drools.rule.Package.checkValidity(Unknown Source) at org.drools.reteoo.RuleBaseImpl.addPackage(Unknown Source) at com.sample.DroolsBDNB.main(DroolsBDNB.java:66) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3966881#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...