I'm a bit confused; the documentation has an example on how to set context variables. In the part where it updates some variables, it takes the following steps: - findLatestProcessDefinition - findProcessInstances using the ProcessDefinition's id - get(0) because in the unit test there can only be one Now, I find it strange that it is just assumed that a process instance is based on the LATEST process definition. Normally I have a process instance id and have no idea if a newer version of the definition has been uploaded, so I cannot make that assumption. How do I retrieve the process instance based on just the id? I can probably query the tables, find the definition id from the jbpm_procesinstance table and from there continue, but I assume there must be an API for this. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4187977#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...