I've been working from the invoices started solution and have tried to edit the 'sort selection' to sort through addition fields that I have created. Originally there was the option to select from 'category', 'item', 'manufacturer' and 'in stock' and I have attempted to change this to my fields 'artist', 'title' and 'sold' via the script workspace.
However it is now unable to sort any records and is now displaying an invalid popup box.
Any suggestions on how to fix this? Thanks!!