I would look at implimenting a switch. (in the onchange of the dropdown)
Switch(Dropdown.Selected.Value,
"Kittens", Set(Image, "kittens.png"),
"Dogs", Set(Image, "dogs.png"),
"Ponies", Set(Image, "ponies.png")
)
Otherwise instead of setting the image you could make image a visable parameter so
you'd have 3 images in the below example and set the images however you want them and just have the switch manage the visiable part...
Switch(Dropdown.Selected.Value,
"Kittens", Set(kittensimagevisable, true),
"Dogs", Set(dogimagevisable, true),
"Ponies", Set(poniesimagevisable, true)
)
