Hi again, I've resolved that problem (Thanks again michaelholtzman) but now i've realised that my process variable is allways a String. How can i make it be a long value? An expression like the next one is not very usefull: expression="#{contextInstance.variables.v eq '100'}" I need, for example, use something like expression="#{contextInstance.variables.v bt 100}" The problem is that v is String, so the second exception is allways true or false depending the literal i use. Thanks in advance and regards View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3978729#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...