Hi, if the .ftl belongs to a process, than after you submit the form, a new process instance is created with parameters from the form(KnowledgeSession().startProcess(processId, map)). If the form belong to a human task, than a new task is started calling client.addTask(task, content, null). I dont think you can use any other operations. Try to download jbpm-gwt-console source files to see the whole processing.
Do you - or anyone else - know about existing (and available) form examples built with JSF2 / RichFaces / CDI and integrated with jBPM 5?
Thanks a lot!