Node selection via URL parameters

All

I wonder if this will work? Not at my lab so can't check syntax. Don't be afraid anyone to come back and tell me if this is complete nonsense and won't work.

when HTTP_REQUEST {
   switch [findstr [HTTP::query] "node=" 5 ] {
      "MNS1" {
         HTTP::uri [string range [HTTP::uri] 0 end-10]
         node x.x.x.x port
       }
      "MNS2" {
         node y.y.y.y port
         HTTP::uri [string range [HTTP::uri] 0 end-10]
       }
       default {
       log local0. "No node= match"
       }
   }
} 

Obviously don't know how many parameter values there are or what you want to happen if there's no match.

Here's hoping,

N