That's great, thanks man! This is exactly what I was looking for. I now can setup my whole presentation in PPT and switch scenes when changing PPT slides. Combined with green screen behind me and green areas/slides in the presentation I have completely changed OBS scene setup simply by changing PPT slides with a remote. Simple, yet awesome.
Tip for users: PPT sends the trigger to OBS after animations. So just put a copy of the slide without animations in front of the slide with animations and use it just for OBS control, automatic move to next slide after 0.1 sec or so.