Insert client certificate into APM session variable via IRule

Hello!

First time poster longtime reader.

I´m trying to extract the Subject value from a client certificate and insert the value in to a APM session variable but with no luck. The Irule in question looks like this

when CLIENTSSL_CLIENTCERT {
log local0. "Subject: [X509::subject [SSL::cert 0]]"
  if {[SSL::cert count] > 0}{
    set client_cert [SSL::cert 0]
    set subject [findstr [X509::subject [SSL::cert 0]] "CN=" 3 ","]
    ACCESS::session data set session.client.unique_id $subject
    log local0. "Current ID = $subject"
  }
}   
when ACCESS_POLICY_COMPLETED {
   set subject [ACCESS::session data get session.client.unique_id]
}

I´m able to see the subject" variable in /var/log

When I´m executing the Access Policy, the session.client.unique_id variable are not populated with the subject" variable from the Irule.

My VPE looks like this,

Thanks in advance!

//Mikael,