unable to configure CAC utilization trap on AP100

Hello,

According to doc" sbc_scz730_mibguide" below "CAC utilization trap"  a session-constraint ( # max sessions  + threshold value) should be applied  to a realm.

Unfortunately I'm unable to configure the threshold value...

system-config

        enable-snmp-monitor-traps               enabled                               <==

        telnet-timeout                          600

        console-timeout                         1

realm-config

        identifier                              CoreFix

        description                             Realm for Core side Fix traffic

        network-interfaces                      MN:0

        media-policy                            TOS-public-IMS

        in-manipulationid                       Core_Inc

        out-manipulationid                      Core_Outgoing

        constraint-name                         CacTrap                                         <===

session-constraints

        name                                    CacTrap

        max-sessions                            48

Sbc1(session-constraints)# cac-trap-threshold 99

% command not found

Sbc1# sh ver

Acme Packet 1100 ECZ7.3.0 Patch 2 (Build 75)

Oracle Linux branches-6/el6-u5 {2014-12-19T23:40:44+0000}

Build Date=02/27/15

Thanks for your help !

DJ Geert Proximus Belgium