Thank you for the updated file Jason. There is just one last thing I'm not quite clear on - you said in a previous reply: "you will also need to edit the Power CMS Developer Notes code to use the wa_evaluate() function." and then posted the code itself, but which file do I make this code change in, in order to get it to work for my client in PowerGallery.
Apologies if I'm being a bit slow here and missing something obvious.