Matnr in operation dependency

Hello everybody,

I am currently trying to find a solution for a routing operation procedure.

This is the scenario:

I need the material number on which an operation is performed. However currently we have to manually type this matnr in local dependencies. When making a lot of articles, this takes too much time. Now I am looking to make a global dependency so that I do not have to do that manually for every article.

Screenshot: the old and slow way:

To make it a bit easier to test I'm just doing the $self.process_name, but for this example I just want the variable that will fill in the $self.process_name automatically with the matnr (in this case qpb/f 0442)

What shoud i put there?

Thank you for your attention and time,

David