Hi Martin, Thank you very much. I managed to make a not-so-minimal working example by stripping my score of items useless for this work And that worked.
I hope your code will work in my full score too. In terms of working method I am quite headstrong and when I see all error messages on the console I sometimes have the impression that I am punished for that. Fortunately, things usually go well. Thanks again. Best regards, Robert Blackstone
