[Help-gnu-radius] Trouble with Simultaneous-Use precedence?

[Norman Schmidt Jr]

Hello!
Im trying to setup gnu-radius in a way that if a user connects
simultaneously, the second connection is not authenticated, and a script is
called to mail the user about the fact. The script just mail the user and
returns exitcode 1. I tried to implement this - without success - with:

# my defaults
DEFAULT Auth-Type = System,
        Service-Type = Framed-User,
        Framed-IP-Address = 255.255.255.254,
        Framed-MTU = 1500,
        Service-Type = Framed-User,
        Framed-Protocol = PPP,
        Framed-Compression = Van-Jacobson-TCP-IP,
        Fall-Through = Yes

# if double login, exec script to mail the user?
DEFAULT Simultaneous-Use = 1,
        Exec-Program-Wait = "scriptthatmailstheuserandreturns1
%C{User-Name}",
        Fall-Through = Yes

# otherwise do nothing, just authenticate
DEFAULT Simultaneous-Use = 0

What's Im doing wrong here?
Regards,
Norman