SAP Business Object Opendocument irule rewrite

when HTTP_REQUEST {
 Check for a 'bad' URI
 if { [[HTTP:uri]] contains "=OpenDocument" } {
  Find the iDocID and save it in variable newpath
  set docid [findstr [HTTP::uri] "iDocID" 1 "&"]
  Log what we saved so we can check it's working, using  to comment this out later
  log local0. "iDocID is: $docid"
  Redirect using the 'good' URL and the requested iDocID
  HTTP::redirect "http://[[HTTP::host]]/BOE/OpenDocument/opendoc/openDocument.jsp?sIDType=CUID&iDocID=$docid"
  log local0. "Redirected for iDocID: docid"
  Exit
  return
  }
}