Can't use a runtime variable as part of request path

I love how easy it is to use restfuse, but with the annotation-based approach, I don't see a way to use a variable I set at runtime as a segment in a rest request. For example, I want to perform this workflow:
1. Make a query call that returns a set of entity ids.
2. Save one of the ids from that call in an instance variable.
3. Make a "get entity by id" call that uses my variable as part of the URL. For example:
@HttpTest( method = Method.GET, path = "/entity/Candidate/{id}" )

The {id} segment would resolve to the variable I set at runtime, but it can't since the annotation gets read at compile time.

This is easy to do in SoapUI, but I'm looking at lighter weight tools like restfuse.