Send same request across multiple pools

Hello, not sure if pool cloning applies to my case. I need to send same request to two different pools...none of them is for monitoring or sniffing traffic. I have a case in which when a client sent a request with certain flag in header--> I have to send it to two different backend pools/applications.

pseudo code: when HTTP_REQUEST { set refresh_cache [HTTP::header Refresh-Cache] if {$refresh_cache eq "true"} { pool pool-1 pool pool-2 } else { pool pool_1 } }

in true case, I see request only goes to pool_1, never reaches pool_2 line which is how the flow works..so is there any way to work around this?

thank you in advance.