Portion of iRule not being processed

Just tried that - it's not logging. The only way I had it logging before was to put log local0. "Query is [HTTP::query]" before the last curly brace. It knows what the query is, however it doesn't seem to be processing.

For instance - this will log the query:

 These do NOT work
   switch -glob [string tolower [HTTP::host]] {
      "oldforum.olddomain.com" {
          Check the URI, set to lowercase
         switch [string tolower [HTTP::query]] {
            "tid=" {
               HTTP::redirect "https://newforum.newdomain.com/default.aspx?g=posts&t=[URI::query [HTTP::uri] tid]"
               return
            }
            "fid=" {
               HTTP::redirect "https://newforum.newdomain.com/default.aspx?g=topics&f=[URI::query [HTTP::uri] fid]"
               return
            }
            "c=" {
               HTTP::redirect "https://newforum.newdomain.com/default.aspx?g=forum&c=[URI::query [HTTP::uri] c]"
               return
            }
         }
         log local0. "Query is [HTTP::query]"
      }