I did a search on this and couldn't find anything on it. In jboss-service.xml, you can define values via properties like this: ${my.prop:123} where the value will be 123 iff my.prop property is not explictly set. However, this syntax does not seem to work on JBossAS 4.0.5 within the jbossweb-tomcat55.sar's server.xml. If I use ${my.prop} in server.xml, it works fine. But if I define a default value like ${my.prop:123}, it doesn't work - the value becomes literally ${my.prop). Wondering if its just me or if its a known issue. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3991467#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...