This is an alpha version of my project, Spellots (preliminary name), which you can use as a guideline for anything similar that you might want to do. Note that some of the custom values on the triggers are not really used, because I thought that I'd be able to reference game links using them, but I could not. (Custom values 5 and 6 currently do not do anything.) Feel free to PM me for further info or general mapping advice. Feel free to publish the map privately for testing.
Salutations, Vulfe