RMAN execute Script as Enterprise Manager Job with variables

Hi all,

I have a question regarding running a job in Enterprise Manager as RMAN-Script. I know, how to do it in plain rman script running from e.g. a shell script, but I don't find something how to do this from enterprise manager (except I could run my shell script as OS script, but the customer does not want to do this).

What I do have as infrastructure: Enterprise Manager 13.3, Database Version 12.1.0.2, Recovery Catalog in a 12.2.0.1 database.

To have all databases using the same scripts, we create a global script with an input variable in the recovery manager catalog, e.g.