iRule help

[root@ve10:Active] config  b rule myrule list
rule myrule {
   when HTTP_REQUEST {
   if { [scan [HTTP::uri] {/%[^.]} f_name] == 1 } {
      switch -regexp $f_name {
         ^[0-9]+$ { log local0. "URI is [HTTP::uri] | $f_name is number" }
         default { log local0. "URI is [HTTP::uri] | $f_name is not number" }
      }
   }
}
}

[root@ve10:Active] config  cat /var/log/ltm
Oct 29 21:26:01 local/ve10 err mcpd[3815]: 01020066:3: The requested rule (myrule) already exists in partition Common.
Oct 29 21:29:49 local/tmm info tmm[7926]: Rule myrule : URI is /1234.aspx | 1234 is number
Oct 29 21:29:57 local/tmm info tmm[7926]: Rule myrule : URI is /1234abcd.aspx | 1234abcd is not number
Oct 29 21:30:10 local/tmm info tmm[7926]: Rule myrule : URI is /xyz1234.aspx | xyz1234 is not number
Oct 29 21:30:14 local/tmm info tmm[7926]: Rule myrule : URI is /somethingelse | somethingelse is not number