By default this is not possible as this does not comply with an offline-first-approach. A microflow will run on the server and not in the client.
A work around might be to create a javascript action that calls the microflow and add this in your nanoflow.
See this post on the forum for the code: https://forum.mendix.com/link/questions/93829
Be aware that this will not work in an offline mode and will result in errors when executing without a connection to the server and I’m not completely sure on how the native builder will handle this, but you could give it a try if offline isn’t a consideration.