Hi, @Thierry_Beauchemin; welcome to the Keyboard Maestro forum.
When I see someone new to the forum, I like to share a few links that are helpful:
- Getting Started with Keyboard Maestro and the Forum
- How Do I Get The Best Answer in the Shortest Time to Questions on the KM Forum?
- Entering and Enhancing Forum Posts
- How to Post/Upload Your Macro to the Forum
If you upload the macro and shortcut I'm sure someone here will be able to help.