iRule redirect http to https except! ...

[root@ve1023:Active] config  b virtual bar list
virtual bar {
   snat automap
   pool foo
   destination 172.28.65.152:http
   ip protocol tcp
   rules myrule
   profiles {
      http {}
      tcp {}
   }
}
[root@ve1023:Active] config  b rule myrule list
rule myrule {
   when HTTP_REQUEST {
        if {not ([string tolower [HTTP::path]] ends_with "sync.php")}{
                HTTP::redirect "https://[HTTP::host][HTTP::uri]"
        }
}
}

[root@ve1023:Active] config  b virtual bar2 list
virtual bar2 {
   snat automap
   pool foo
   destination 172.28.65.152:https
   ip protocol tcp
   rules myrule2
   profiles {
      clientssl {
         clientside
      }
      http {}
      tcp {}
   }
}
[root@ve1023:Active] config  b rule myrule2 list
rule myrule2 {
   when HTTP_REQUEST {
        if {[string tolower [HTTP::path]] ends_with "sync.php"}{
                HTTP::redirect "http://[HTTP::host][HTTP::uri]"
        }
}
}

[root@ve1023:Active] config  curl -I http://blablabla.bla.com/
HTTP/1.0 302 Found
Location: https://blablabla.bla.com/
Server: BigIP
Connection: Keep-Alive
Content-Length: 0

[root@ve1023:Active] config  curl -I http://blablabla.bla.com/test
HTTP/1.0 302 Found
Location: https://blablabla.bla.com/test
Server: BigIP
Connection: Keep-Alive
Content-Length: 0

[root@ve1023:Active] config  curl -I http://blablabla.bla.com/sync.php
HTTP/1.1 404 Not Found
Date: Thu, 10 Nov 2011 01:10:46 GMT
Server: Apache/2.2.3 (CentOS)
Connection: close
Content-Type: text/html; charset=iso-8859-1

[root@ve1023:Active] config  curl -Ik https://blablabla.bla.com/sync.php
HTTP/1.0 302 Found
Location: http://blablabla.bla.com/sync.php
Server: BigIP
Connection: Keep-Alive
Content-Length: 0