I may be doing something wrong but <output:indent value='no'/> does not appear to work with fn:serialize

Adam

let $ve_collectlocations := <collections><collection>{$page:collection_main_private}</collection></collections>

let $parameters := <output:serialization-parameters>

         <output:method value='xml'/>

         <output:indent value='no'/>

         <output:omit-xml-declaration value='yes'/>

         <output:encoding value='utf-8'/>

   </output:serialization-parameters>

let $vs_result:= <Items>{for $collectlocation in $ve_collectlocations//collection/text()

            for $collect in collection($collectlocation)/*

                for $deadline in $collect//Deadline/Open 

                    let $irn := ($collect//FIN)[1]       

                    let $xs_string:= string(fn:serialize($collect,$parameters))

                    let $md5 :=  <md5>{xs:hexBinary(hash:md5($xs_string))}</md5>

                    let $vs_result := <Hit>{md5}</Hit>

                    return  $vs_result

                  }</Items>

return $vs_result

};