Moving Image to Back with VBA

I've searched everywhere and can't figure this out. I'm no expert with VBA, but I can figure most stuff out. Here's the situation. I have a spreadsheet with several images on it. I want to be able to send an image to the back of a stack of images based upon a value selected in a cell. So what code do I need to enter?

You can always try recording a macro to see what script is generated in the background as the issue is clearly syntax related.

1) Developer Tab > Record Macro
2) Perform your operation manually
3) Developer Tab > Stop Recording
4) Developer Tab > Macro 1 (If not an existing module) > Edit