alternate attribute names

[Rod Widdowson]

> So, the only reason I saw a completely new attribute as a potentially better approach was because I could reload the service. 

Stating the blindingly obvious for the archive (since you sussed this out by way of realizing the scoping) - Make sure that new Predicate beans are declared inserted at the service level (files referred to by lines services.xml) rather at the global level (in global.xml).