duel is only the prefix. You need to type the other parts too. duel by itself does nothing
So I should type : "duel in" ? is this what you meant ?
And no, those have nothing to do with the system itself. However some parts in your script are missing parts of code. Compare your line #24 to the original script line #24. It's missing a string.lower(), so on and so forth.
yes but interesting I copied whole code and didn't change anything in code , maybe I pushed "Delete" button by wrong .