I am a phd student and I am doing a research in the field of BPM. I found jBPM as very powerful BPMNs. I want to do a very simple test in process engine. Just i want to add a new parser to the semantic module component in order to accept a new simple text-based process modeling language. Just i want to know If i change the source code of jBPM, How i can test my manipulation? To see my new parser works properly?? Should i sent the code first to the jBPM team or ..?