Whack a Mole Game Help!

[pyrogirl8]

I'm trying to make a Whack a Mole Game for Alice 3, and I have made a list of gophers (there were no moles) but my issue now is I can't get that list of gophers into something I can use. By that I mean in the drop down box where you can select objects, there's "this", "thisWackaMole", "thisGround" and "thisGopher" 0-11, but I don't have a "thisGophers" that I can use to do like "thisGophers" move UP. I need them all to move at random as well, which I need help with. I don't know how to get it to select a random Gopher.
Thanks!

I attached my work so far.