Display a multiple-choice menu
{{result_variable_name}}=$(whiptail --title "{{title}}" --menu "{{message}}" {{height_in_chars}} {{width_in_chars}} {{menu_display_height}} "{{value_1}}" "{{display_text_1}}" "{{value_n}}" "{{display_text_n}}" ..... 3>&1 1>&2 2>&3)