4GL for Windows menu problem?

The following code fragment works fine under 4GL RDS for SCO Unix (v4.11.UC1), but fails under 4GL for Windows v4.11.WC1. For some reason pressing UP or DOWN in the Windows version moves between the menu options instead of executing the desired code blocks. David. >MAIN > > OPTIONS > MESSAGE LINE 3 > > MENU "Test" > COMMAND KEY (UP) "Up" "Move up list" > MESSAGE "You selected UP!" > SLEEP 1 > COMMAND KEY (DOWN) "Down" "Move down list" > MESSAGE "You selected DOWN!" > SLEEP 1 > COMMAND KEY (F4,A) "Add" "Add an entry to list" > MESSAGE "You selected Add!" > SLEEP 1 > COMMAND KEY (F3,D) "Delete" "Delete current entry from list" > MESSAGE "You selected Delete!" > SLEEP 1 > COMMAND KEY (F2,U) "Update" "Update current list entry" > MESSAGE "You selected Update!" > SLEEP 1 > COMMAND KEY (F10,Q) "Quit" "Exit list" > MESSAGE "You selected Quit!" > SLEEP 2 > EXIT MENU > END MENU > >END MAIN