Our metatype/values initially mirrored the jmx opentype stuff, so that is where the CompositeMetaType, TableMetaType come from. A map of string keys with metavalues is no different than a javabean of property names to values, so that type of map should have a CompositeMetaType representation. I'm testing a MapCompositeValueSupport impl as part of the ds property fixing. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4126854#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...