Hello,
Welcome and thank you for your positive feedback 🙂
Regarding subgraph exposed parameters, indeed; the parameter out value is only set when the subgraph is finished/done/returns (and is only set when the subgraph starts by the way as well). With that said however, I am already planning to make the out parameter value always be updated even while the subtree is running since that feature has been required more than once 🙂
This will most probably hit on the next version, but if this is a showstopper for you, let me know and I can send you some temporary implementation that will keep the exposed parameter updated while the subtree is running.
Gavalakis
