Proxy Portal redirection does not work

Hi all,

i have a Fortigate 200D with Firmware 5.2.5.

My goal is to give the access from external to an application published on an internal http page.

I can succesfully access to the portal, so credentials are OK, but when i click on the bookmark i get the following error:

SSL VPN PROXY ERROR

The proxy server could not handle the request GET/Proxy/http/x.x.x.x....

Reason: Access denied

Looking at the VPN Logs i see these messages:

Action: SSl WEB Deny

Log Description: SSL VPN Deny

Message: SSL Web Application Blocked

Reason: http

I have tried both with http and https, moving the application on SSL.

Any idea?

thanks in advance