Hi The SCA philosophy is that deployment configuration, such as the details of component wiring and endpoint URLs, is independent of component implementation. So Tuscany/SCA hasn't been designed with the ability to change reference URLs from within the business logic in mind.
If you really wanted to do it we'd have to find a way of resetting the reference in question. We tend to do quite a lot of configuration processing up front so just resetting URL values in the model may not be enough. Which version of the runtime are you using? Regards Simon
