There is no way to mirror the image automatically. Instead, you would have to do something like this:

1. Add two copies of the image to the report - one is the image and one is its mirror.

2. For the image, right-click, select "Format Image..." and click on the button to the right of the Suppress checkbox (DO NOT check the checkbox!). Enter the following:

PageNumber mod 2 = 0

3. For the mirrored image do the same thing except the suppression formula is:

PageNumber mod 2 = 1

4. Align the top right of the images so that one is on top of the other.

-Dell