iRule errors out on Insert operation

Here you go. The iRule that has problems:

when CLIENT_ACCEPTED {

    set applayer_hsl [HSL::open -proto UDP -pool hslog_pool]     
    set ClientPort [TCP::local_port]         

}

when HTTP_REQUEST {

    set http_request_time [clock clicks -milliseconds]

    set req_time [clock format [clock seconds] -format "%D %H:%M:%S %z"]

     generation of UUID.
    set id "[IP::client_addr][TCP::client_port][IP::local_addr][TCP::local_port][expr { int(100000000 * rand()) }]" 
    binary scan [md5 $id] H* md5var
    log local0. "$md5var"

    insert the generated unique id as header  
    HTTP::header insert F5-Unique-Id $md5var

    set http_request "[HTTP::request]HttpKalive:[HTTP::is_keepalive]\r\nHttpVer:[HTTP::version]\r\nF5Addr:[IP::local_addr]\r\nClientIP:[IP::client_addr]\r\nTime:$req_time\r\nPort:$ClientPort\r\nTimeinMills:$http_request_time"
       append http_request "\r\nf5UniqueId:$md5var"

}


when LB_SELECTED {

    set lb_selected "Server:[LB::server addr]\r\nPool:[LB::server pool] "
    append the the worker selected to http_request
    append http_request "\r\n$lb_selected"

     log local0. "Selected [LB::server addr]"
}


when HTTP_RESPONSE {

    calculate the response time and append it
    append http_request "\r\nresponseTime: [expr {[clock clicks -milliseconds] - $http_request_time}]"

    set response "Set-Cookie:[HTTP::header values Set-Cookie]\r\nContent-Type:[HTTP::header Content-Type]\r\nContent-Encoding:[HTTP::header Content-Encoding]\r\nContent-Length:[HTTP::header Content-Length] "

    log local0.info "<190>\r\n$http_request\r\n$lb_selected\r\n--||--\r\n$response"

    HSL::send $applayer_hsl "<190>\r\n$http_request\r\n--||--\r\n$response\r\n"


}

The iRule that has the respond:

when HTTP_REQUEST {
 HTTP::respond 301 Location "http://www.company-name.com[HTTP::uri]"
}