httpd_global_handlers error in couchbase 1.1.2

Just try to use this neu feature:

[httpd_global_handlers]
_google = {couch_httpd_proxy, handle_proxy_req, <<"yourfiltercontentsucks://www.google.com">>}

When acces the url:
yourfiltercontentsucks://localhost:5984/_google i get the error:
{"error":"unknown_error","reason":"undef"}

Log ie here:
http://dl.dropbox.com/u/22058136/couchbaseError1.1.2.log

Please, some help, i really need this, maybe is this ok in other versions???

Ubuntu 10.04 box