try jeanfabre's ArrayMaker plugin. It supports arrays of textures. Then you can just use your variable as an index.
Other than that there's only the manual way, with one state that checks the int with some "int compare" actions and then fires a lot of different events accordingly.
A third solution (EDIT : contradicting to what I said before, I know
) would be to write a dedicated action for this. Something like "Select random string" with textures instead of strings and a public int for the index would probably do nicest.
If you wanna do the third but somehow don't get along with PlayMaker(mind you, it's really not well documented), then just ask and I'll fix you up a version.
I just thought you might want to try such stuff on your own since writing your own actions is a very important step towards using PlayMaker to its full extend
