Hey Franz-- on the Kinvey side we've never experimented with this, but it should be possible with the REST API. Maybe someone in the community has. If you experiment, please feel free to share your results!
about 10 years ago
This is somewhat light, but it might help to get your started - http://blog.wikibudgets.org/2012/10/introduction-to-kinvey-flash-integration.html.