I am trying to get a non serialisable object to be stored in the context of a workflow process. I have updated the jbpm.cfg.xml file to point to my modiffed varmapping file, I then added the following XML snippet into jbpm.varmapping.xml file. <jbpm-type> <variable-instance class="org.jbpm.context.exe.variableinstance.StringInstance" /> </jbpm-type> I have written a Junit test case to verify that the number of types returned by the call JbpmType.getJbpmTypes() matches the number the is declared in the modified mapping file. MyMatcher class just contains a "return obj instanceof MyClass" in it and the convertor object just returns a constant test string as the conversion to and from the database. If I step through the list of the JbpmTypes from the object factory calling match() with an instant of MyClass I get a null pointer from the JbpmType that I think corresponds to the one I have written. If I run a workflow ProcessInstance containing an action handler that attempts to store an instance of MyClass I get an hibernate exception complaining that I was attempting to put a non persistent variable into a persistent store. Any suggestions would be helpful, I am at my wits end trying to get this fixed … I expect I have missed a simple step somewhere. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4209406#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...