Hi Cornelia
You are right: I checked the settings again and realized that I have to replace the 'Variable' 0COMP_CODE in the example below by the variable used in the filter of the planning modeler:
It works the following way: If you don't select a row a pop-up will appear that prompt for values. In order to have multiple rows selected and changed you need to create a variable that can process several single values.
Thank you very much and have a nice weekend!
Christian