Using Filter Service on Reverse/Invoke

Has anyone successfully registered a filter service on a Reverse/Invoke server?

I’ve followed the documentation in the Admin Guide but cannot get the filter service to run.

The following are my parameters:

**Service is part of Anonymous ACL.
**watt.server.filterSvcName=FilterService:filterService
**watt.server.errorSvcName=FilterService:filterErrorPage
**watt.server.filterSvcContentTypes=text/xml,text/html
**Service is in list of Allowed Serviceson proxy port of RI Server.

Any help/suggestions would be appreciated.

Thanks.