by Hooray » Sun Feb 11, 2018 1:42 pm
generic protocols can be set up to write to a property, properties can be listened to using Nasal listeners, which in turn trigger callbacks (Nasal functions).
apart from that, I am not sure if the proposed solution is necessarily such a good idea - you may be better off telling us exactly what your use-case is.
Asking for a certain solution is usually not a good way to describe the underlying problem.