Dear all, I'm trying to use an external script written by myself. And I insert the following line into my mysql database. INSERT INTO radreply( UserName,Attribute, Value ) VALUES( "123", "Session-Timeout", "%{exec:/path/to/myprogram}" ); And I insert exec into instanciate and authorize section. But the server failed to send the session-timeout to my client. the following is "myprogram" #!/usr/bin/perl -w print "Session-Timeout==1800"; And my exec section is like this: exec { wait = yes inputpairs=request outputpairs=response program="/path/to/myprogram" packet_type=Access-Accept } Have I missed anything? Any help would be appreciated and thanks in advance. Sincerely, Kun