Multiple Images For E-Comm Products

Hello!

Some of my designs have a back and a front option and for some reason it is only giving me the option of “main image” when I try to link up the back of the design as an image on the product page. Does anyone know a way around this? Both options are uploaded in the product.

Thank you!


Here is my site Read-Only: LINK
(how to share your site Read-Only link)