Symbolic dice button... but chosen and not random image?

Is there a way to select a specific image during a game from a number of images, to be used as an image on the top bar. For example, instead of a symbolic dice button on the top bar, where you might press it and it will give you a random image from among 6 to show a die roll with custom sides, I want to be able to specifically select an image to show from among a group, and then have that image be the one displayed in the window box. I know how to do that kind of thing with layers on a regular piece on a map, and presumably I could achieve sort of what I want by just making it a symbolic dice button and clicking it a number of times until the right image happens to come up, but I’d rather be able to select it. Any idea how to do that?