I did again a test on a popup message settings and now it works.
You must be right but I don't remember what was the difference with
what I wrote before...
I asked how do this to understand a easy exemple
But I want to continue a part of my sequence before going to the cleanup.
That's why I used a statement to go to the cleanup in which there is the function
RunState.Exe.terminate()
Thanks for all your advices