irule to allow based on the src IP in the http header

Please let me know if the below http header syntax work.I am trying to allow the traffic looking into the http header for the iv-remote-address

when HTTP_REQUEST { Traffic is allowed. Client IP match found in qa if { [class match [[HTTP::header iv-remote-address]] eq "qa" ] }{ pool qa_pool } else { Traffic is dropped. Client IP match not found in QA reject } }