PIWIK cuts out ssl proxy of url


my webspace hoster supports https over a ssl proxy (ssl-account.com).

I configuered Piwik for use with ssl and proxy, but my problem is that Piwik replace the https and adds the domain name.

I need a replace like https:// + ssl-acount.com/ + domain name

Can i configure something like this somewhere in piwik?

Thanks and regrads,