The MultiThreqding and sync link ressembles more what I need since it allows thread safe data manipulation and return to the main thread.
Thx @Weibye for that ![:wink: :wink:](https://d1ap1mz92jnks1.cloudfront.net/images/emoji/twitter/wink.png?v=12)
It is still a bit unclear to me how to notify the main thread once the FRunnable is done computing but I have open a new post for this question here :