Dynamic Pool assignment with APM in 10.2.4

I added a test to check if session cookie exist. In version 11, "ACCESS::session data get" is valid in HTTP_REQUEST event. try with session variable between quotes:

when HTTP_REQUEST {
    if {[HTTP::cookie exists MRHSession]}{
        set varpool [ACCESS::session data get "session.custom.pool_name"]
        if {$varpool eq ne ""} {
            pool $varpool
        }
    }
 }