Request: Drop-Down Blues

Hello everyone, I am having some issues. I am trying to create a program that randomly selects a item from an array, and that can be limited by drop down menus. I have the random part down pat, but I cannot seem to get the drop down menus to work.

So I wanted to ask how you all would do it. I tried a few ways but could not get them to work.

The drop downs in this document are just for show.