Ebay Template Images in Omnivore

We already have an ebay template that we were using in inkfrog which we have moved to a new 3rd party app called omnivore. I am unable to give you access to the app to do testing, so really need someone who understands the template language. We had setup our existing template to allow for upto 12 images but the number of images was variable depending on our shopify products. It really is only understanding the one image and duplicating it 12 times.