In my test, I posted the set-global command along with the rule execution commands, like this (snippet): List commands = new ArrayList<Command>(); commands.add(CommandFactory.newSetGlobal("logger", logger)); commands.add(CommandFactory.newInsert(fact, "outId")); commands.add(CommandFactory.newFireAllRules()); BatchExecutionCommand batchCommand = CommandFactory.newBatchExecution(commands, "ksession"); .....etc. (I had configured the ksession as stateless) -- View this message in context: http://drools.46999.n3.nabble.com/drools-server-empty-response-body-tp319... Sent from the Drools: User forum mailing list archive at Nabble.com.