This JBoss BRMS demo project will provide you with an example of creating, deploying and leveraging a set of rules (decision table) in a Realtime Decision Server. You will be given examples of calling the rules as if using it from an application with the RestAPI that is exposed.
Also I got response without values when executing URL from point 18. Can you please check if guided table and requests are correct?
Response I got for request on point 18: <?xml version="1.0" encoding="UTF-8" standalone="yes"?>