Set silence notification message (as for activity)

[diegoathletic . 89]

By the command activity you can set the activity message for monitoring.  
Is there any similar command for set the message to be displayed when  
monitoring silence?
I've found that this question have been made on [1], [2] and [3] but there  
are no answers.
Cheers.

[1] http://lists.gnu.org/archive/html/screen-users/2010-01/msg00020.html
[2] http://lists.gnu.org/archive/html/screen-users/2010-01/msg00021.html
[3]  
http://stackoverflow.com/questions/6541998/can-i-customize-the-action-gnu-screen-takes-when-it-alerts-after-monitoring-for

--
Diego Arellano D.