So....I understand that if I want to reuse the ExpressionAssignmentHandler class, I just extend it and then override the getExpressionSession method.

What is the next step from there? How do I "plug it in" to jbpm? Am I missing a configuration file or directive inside of jbpm.cfg.xml somewhere?

I apologize ahead of time....sometimes, I just need my hand held for a little bit :)