i read the documentation saying drools 4.x supports pluggable dialects, but i can't find anything else that explains what it is. i think by default i am using java dialect. and there is a MVEL dialect. is that it? i am trying to see if there is a way to not use java beans as fact objects. i have been looking to the MVEL website where they have a sample like this: Map vars = new HashMap(); vars.put("x", new Integer(5)); vars.put("y", new Integer(10)); Integer result = (Integer) MVEL.eval("x * y", vars); my question is if i use MVEL dialect, can i pass in a Map similar to the above for fact objects? Thanks. jack. --------------------------------- Looking for last minute shopping deals? Find them fast with Yahoo! Search.