APM Activesync iRule and PROFILE_RESTRICT_SINGLE_IP variable

Hi,

When configuring APM to authenticate Activesync connections, there are 2 solutions:

• enable irule _sys_APM_ExchangeSupport_main or _sys_APM_ExchangeSupport_main
• configure exchange profile which enable one of these irule (or another one...)

In these irule, there is the following code:

if { ! [ info exists PROFILE_POLICY_TIMEOUT ] } {
    set PROFILE_POLICY_TIMEOUT            [PROFILE::access access_policy_timeout]
}
if { ! [ info exists PROFILE_MAX_SESS_TIMEOUT ] } {
    set PROFILE_MAX_SESS_TIMEOUT          [PROFILE::access max_session_timeout]
}
if { ! [ info exists PROFILE_RESTRICT_SINGLE_IP ] } {
    set PROFILE_RESTRICT_SINGLE_IP        1
}

Why the irule does not retrieve PROFILE_RESTRICT_SINGLE_IP from [PROFILE::access restrict_to_single_client_ip] instead of setting it to 1 which create lots of active sync sessions from several different IPs?

to set the variable before , I created the following irule:

when HTTP_REQUEST priority 1 {
if { ! [ info exists PROFILE_RESTRICT_SINGLE_IP ] } {
        set PROFILE_RESTRICT_SINGLE_IP        [PROFILE::access restrict_to_single_client_ip]
    } 
}

Is there best solution?