using "getkword" function creates a menu but I can't get the keyword by click

that is very strange ,some times i can get the keyword by click,but sometimes I can't ! it maybe some system variable cause it ,who can tell me how to solve this？

read about these 2 variables

(getvar "dynmode")
(getvar "dynprompt")

I means the menu always exit ,but some computer can't get the return value by click the menu

Could you post the "initget" & "getkword" lines of your code? Never heard of an issue like this before.