need help to get uri to work regardless of any extra characters

[root@ve10:Active] config  b virtual bar list
virtual bar {
   snat automap
   pool foo
   destination 172.28.19.79:443
   ip protocol 6
   rules myrule
   profiles {
      clientssl {
         clientside
      }
      http {}
      tcp {}
   }
}
[root@ve10:Active] config  b rule myrule list
rule myrule {
   when HTTP_REQUEST {
   set my_uri [string tolower [HTTP::uri]]
   if {[class match -- $my_uri contains www_vanity_url_redirection]} {
      set vanity_path [class match -value $my_uri contains www_vanity_url_redirection]
      HTTP::redirect $vanity_path
   }
}
}
[root@ve10:Active] config  b class www_vanity_url_redirection list
class www_vanity_url_redirection {
   "/test" { "https://www.someotherplace.com" }
}

[root@ve10:Active] config  curl -Ik https://172.28.19.79/test
HTTP/1.0 302 Found
Location: https://www.someotherplace.com
Server: BigIP
Connection: Keep-Alive
Content-Length: 0

[root@ve10:Active] config  curl -Ik https://172.28.19.79/testy
HTTP/1.0 302 Found
Location: https://www.someotherplace.com
Server: BigIP
Connection: Keep-Alive
Content-Length: 0