F5 Primary/Standby and iControl

Hey quick questing, I am writing an icontrol script to easily toggle members on and off. The script I downloaded from devcentral works great just making some enhancements to it.

However my F5 Administrator said that I need to sync the configuration changes after I toggle the state of a member to the secondary server. This does not sound correct to me, but I have been known to be wrong. Can someone help shed some light on why I also need to sync a configuration change when I am only doing a:

 $MemberSessionState =
    {
            member => $member,
            session_state => $toggleState,
            monitor_state => $toggleState
    };
    push @MemberSessionStateList, $MemberSessionState;
    push @MemberSessionStateLists, [@MemberSessionStateList];

Thanks

Ed