Change configuration of subsystem in RT Box model from json-rpc?

Hi,
is it possible to select the configuration of a configurable subsystem in a model running in RT Box via the json-rpc interface? I know it is probably not possible to switch at runtime after the model is started, but it would be nice to be able to select between different variants of subsystems, e.g. during model load, a bit like it is described for simulations here.

Best regards

// Ole