flex-config.xml named whitelist

Does anyone knows if I Can utilize endpoint property within 
flex-config.xml::whitelist::named::object reference?

 I am able to do it directly from <mx:RemoteObject
id="customerDelegate" ... 
endpoint=... source=.. 

 But I would like to use  <mx:RemoteObject id="customerDelegate"  
named="MyNamedInTheWhitelist"

 and control the access through flex-config.xml

 Jrun4 seems to fail on endpoint entry (it is not in the documentation) in 
within flex-config.xml::whitelist::named::object 

 Can I do it?

 KK