Hello, I have a little test case as follows: *import* org.drools.builder.KnowledgeBuilderConfiguration; *import* org.drools.builder.KnowledgeBuilderFactory; *import* org.junit.Assert; *import* org.junit.Test; *public* *class* TestDrools5Config { @Test *public* *void* testConfig() { KnowledgeBuilderConfiguration knowledgeBuilderConfiguration = KnowledgeBuilderFactory.*newKnowledgeBuilderConfiguration*(); knowledgeBuilderConfiguration.setProperty( "drools.dialect.java.compiler", "JANINO"); knowledgeBuilderConfiguration.setProperty( "drools.dialect.java.lngLevel", "1.6"); String droolsDialectJavaCompiler = knowledgeBuilderConfiguration.getProperty("drools.dialect.java.compiler"); System.*out*.println("droolsDialectJavaCompiler=" + droolsDialectJavaCompiler); Assert.*assertNotNull*(droolsDialectJavaCompiler); String *droolsDialectJavaLngLevel* = knowledgeBuilderConfiguration.getProperty("drools.dialect.java.lngLevel"); System.*out*.println("drools.dialect.java.lngLevel=" + droolsDialectJavaLngLevel); Assert.*assertNotNull*(droolsDialectJavaLngLevel); } } It fails. I have seen the post for using JANINO with Drools: http://lists.jboss.org/pipermail/rules-users/2009-February/008089.html Yet this does not explain my test case failing – any ideas. It appears as if it is not possible to set JANINO programmatically, only via properties.conf, etc. which I don’t want to do(!) Cheerio, Nic Hemley _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users