There is read/write in Micrologue but can’t find it in Nanologue via Cubasis. I will like an update to that.
Apple’s Inter-App Audio protocol doesn’t support automation (same for the Audiobus protocol) which prevents us to offer automation for our Nanologue instrument and other third party instruments or effects within Cubasis. However, you can control some of the parameters of your IAA/Audiobus apps using MIDI CCs, provided that the apps support MIDI CC messages.
Hope that helps.