It works now.
I've changed a lot, not sure if all is needed.
I think on the modal page you need to branch back to the modal page itself and set the succes message.
Also I'm not sure if you're able to refresh an IA report region direct via a refresh region action, the way I always do this is branch back to the page itself and set the ID of the record to the current ID ( so it does not use a new sequence and fetches based on the "value".
Just realised that it probably was not refreshing due to not having a static ID (the region), that was probably the issue. I think someone else filled in the Static ID already, now I changed the DA and it works as expected. Also solved one of my own questions
I think this is what you wanted.
Bas that is what I want. Thank you for that solution!
I have one question more. Is it possible to do that without alert?
Few things are possible if you just open your application and look into it. It should be the learning which you earn from this forum, not the work which you wanna accomplish.
Search your dynamic action "Auto Close" and you will know what should be done to suppress Alert message
-- Sunil Bhatia