Add http Header in URL incoming request

not sure it will work or not When HTTP_RESPONSE { If { ( [HTTP::URI] starts_with “/store/category/”) } { HTTP::header insert “location=category” } }

if {[HTTP::uri] starts_with /store/} {
   if {[HTTP::query] eq ""} { 
     set sep "?" 
   } else { 
     set sep "&" 
   }
   HTTP::uri "[HTTP::uri]${sep}location=[getfield [HTTP::uri] {/} 3]"
}

/store/category/ becomes..

/store/category/?location=category

/store/joe/?value=2 becomes...

/store/joe/?value=2&location=joe