trying to capture 5XX HTTP response and retry to another pool member - passive monitor

I am running LTM 11.4 and trying to capture HTTP response 5XX using below irule. I am trying to log on finding 5XX status code. I do not see any thing in the logs. The irule is being hit as it does execute log local0.info "Run $retry". It is a HTTPS connection client SSL -> F5 -> server SSL. Am I missing any thing for this to work?

 

Retry 400/500 Errors

  CPU impact:   Low
  Requirement:  HTTP profile

  When a 400/500 is returned from the server the LTM will try
  resending to request to every member in the pool. Any time a
  request is retry the LTM will clear out the retry variable after
  the count has gone over the limit, or when a non 400/500 status is return
  This will allow the next request to be able to use the resend iRule also.

when CLIENT_ACCEPTED {
    set retry 0
}

when HTTP_REQUEST {
    set http_request [HTTP::request]
}

    when HTTP_RESPONSE {
    if { ([HTTP::status] starts_with "5")} {
        log local0.info "found 500" 
        incr retry
        if { $retry <= [active_members [LB::server pool]] } {
            HTTP::retry $http_request
        } else {
            set retry 0
        }  

    } else {
        set retry 0
    }
}

when LB_SELECTED {
    log local0.info "Run $retry"
    if { ($retry > 0) && ($retry <= [active_members [LB::server pool]])} {
        LB::reselect pool [LB::server pool]
    }
}