[plt-scheme] HtDP GUI

Hi All --

Is there a way to get a make-choice gui to dynamically reflect the
value of a state variable?

(define test-list (list "a" "b" "c"))

(define choiceMenu (make-choice test-list))

(create-window (list (list choiceMenu)))
;menu lists choices a, b and c

(set! test-list (list "a"))
;menu lists only a

Thanks!
Dave Yrueta