[Serusers] Filtering redirections

[MC]

Hi,
I would like to deny all 3xx messages coming from subscribers. I found following code in seusers mailing list but my ser give me: "unknown command, missing loadmodule? ". What is wrong?

failure_route[1] {
        if (t_check_status("3[0-9][0-9]")) {
                t_reply("400","No redirect available");
                break;
        }
}

I have following modules loaded:
loadmodule "/usr/lib/ser/modules/textops.so"
loadmodule "/usr/lib/ser/modules/sl.so"
loadmodule "/usr/lib/ser/modules/tm.so"
loadmodule "/usr/lib/ser/modules/acc.so" 
loadmodule "/usr/lib/ser/modules/rr.so"
loadmodule "/usr/lib/ser/modules/maxfwd.so"
loadmodule "/usr/lib/ser/modules/usrloc.so"
loadmodule "/usr/lib/ser/modules/registrar.so"
loadmodule "/usr/lib/ser/modules/auth.so"
loadmodule "/usr/lib/ser/modules/auth_radius.so"
SER version 0.8.12

Regards,
MC
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