Yes. But not directly. What you can do is set a health event to go off at the chickenlife value (or make a new variable called something else) and just have it send the key command for "1". This will use whatever pot you have in your belt in spot 1. Then tell pickit to grab all the super pots it gets.
I'm sure there is a way to make it actually use any pot on your person, but I'm not a good enough js programmer to do it yet.