OK so if you don't want to open the modal/or you want to disable the Edit modal button you can do 1 or 2 things:
Note - when you hover over the Customer_Selection.value in the Only run when field what pops up in the hover? null or ""?
Try:
In the event handler should be {{Customer_Selection.value != "" && Production _Selection != ""}}
Or place this same logic in the Disable field in the Edit Modal component