But the documentation says the following: The variable names are java.lang.String. By default, jBPM supports the following value types: java.lang.String java.lang.Boolean java.lang.Character java.lang.Float java.lang.Double java.lang.Long java.lang.Byte java.lang.Short java.lang.Integer java.util.Date byte[] java.io.Serializable classes that are persistable with hibernate View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4145532#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...