I think your problem is that you are trying to execute from a linux command and the subsystem resides at the asterisk level. Not that you can do it from there but you must address it where it resides. ...mike/kb8jnm ----- Original Message ----- From: "Users of Asterisk app_rpt" <app_rpt-users@lists.allstarlink.org> To:<App_rpt-users@lists.allstarlink.org> Cc: Sent:Tue, 4 Apr 2017 16:39:51 -0700 Subject:[App_rpt-users] event subsystem variable use in system call I am learning about the event subsystem. One of my events looks like this: echo bla ${RPT_ALINKS} >> /tmp/blabla = s|T|RPT_NUMLINKS This executes when I connect. The contents of /tmp/blabla is simply bla. I would have expected ${RPT_ALINKS} to have been expanded. Am I assuming functionality that doesn't exist? Lowell