Automation via Rewire - Cubase being master

Hi friends @ Steinberg,

obviously it is not possible to automatize Rewire Slaves (like e.g. Propellerhead Reason) from Cubase via MIDI!!! Why not???

Ableton Live can, whilst Cubase don’t:

So my suggestion is:
Please implement this functionality in Cubase, so that users can automatize e.g. Reason instruments via Rewire.