I think it can be done using the moveup action, but not by the numbers. In order to use floor numbers, the script would have to know which floor you are on all the time, so if you are on the 3rd floor and you push 1, it needs to know to move down 200, or moveup=-200. It may be possible that way, but I can't think of it.
If you use one button for up and one for down and make it move 100 each way, each time, then I think it can be done. Then theres the matter of making it move slowly and not jump 100 each time.
You could put the floor number on the wall in front of the elevator on each floor so you know where you're at.
Best.
I'm sorry, my answers are limited. You must ask the right question.