Dan,
Here’s a couple of other good posts that may be useful that I’ve found with my hunting and pecking. I’m trying to get it going with PO receipts… but these post are very much in line with your production activity reporting needs.
Nancy
https://www.epiusers.help/t/barcode-listen-event-in-customization-wizards
https://www.epiusers.help/t/filling-a-textbox-field-from-c-variable