Steven, You can create variables execution time using methods like setVariable etc. in execution service. You can use those variables in your custom execution code using OpenExecution.getVariable/getVariables. Since the variables are completely dynamic in nature, you cannot statically declare them in the jpdl xml. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4269196#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...