Displaying messages to tty using whiptail through monit

I would like to display a [whiptail](http://manpages.ubuntu.com/manpages/intrepid/man1/whiptail.1.html) message on the login screen that is triggered by monit, but I am without luck. I understand it might be something to do with interactive/non-interactive shell. Here is the script that gets triggered by monit. #!/bin/bash /usr/bin/whiptail --infobox 'Hello World.' 7 25 >/dev/tty1 Is there a trick, or should I avoid using whiptail?