Hello, I try to use several drl files declared with same package with a dsl, but it doesn't work. java.lang.RuntimeException: ExempleTest6.java *****************: Unable to compile drl files..... at com.pv.rules.test.Exemple6Test.readRule(Exemple6Test.java:85) at com.pv.rules.test.Exemple6Test.test1(Exemple6Test.java:35) at com.pv.rules.test.Exemple6Test.main(Exemple6Test.java:26) I have an Unexpected token from a word that I've define on my dsl which works if I use only one drl file. I used that to check errors: // Check the builder for errors if ( builder.hasErrors() ) { System.out.println( builder.getErrors().toString() ); throw new RuntimeException( "ExempleTest6.java *****************: Unable to compile drl files....."); } I use that in my java readRule method : private static RuleBase readRule() throws Exception { Reader source1 = new InputStreamReader( Exemple6Test.class.getResourceAsStream( "/com/pv/rules/drl/Exemple61.drl" ) ); Reader source2 = new InputStreamReader( Exemple6Test.class.getResourceAsStream( "/com/pv/rules/drl/Exemple62.drl" ) ); Reader dsl = new InputStreamReader( Exemple6Test.class.getResourceAsStream( "/com/pv/rules/dsl/XPathLanguageExemple4.dsl" ) ); PackageBuilder builder = new PackageBuilder(); builder.addPackageFromDrl( source1, dsl ); builder.addPackageFromDrl( source2, dsl ); builder.addPackageFromDrl( source3, dsl ); // Check the builder for errors if ( builder.hasErrors() ) { System.out.println( builder.getErrors().toString() ); throw new RuntimeException( "ExempleTest6.java *****************: Unable to compile drl files....."); } //get the compiled package (which is serializable) Package pkg = builder.getPackage(); //add the package to a rulebase (deploy the rule package). RuleBase ruleBase = RuleBaseFactory.newRuleBase(); ruleBase.addPackage( pkg ); return ruleBase; } Do you have an idea ? Thanks :-) PS: Sorry for the previous message, I sent it in error, I didn't finish to type it.