Plesk SSL error

Hello,

I have a weird thing in Plesk 12.

I have installed a ssl certificate.
I use this also fro plesk panel and for the websites.

Plesk panel no problem.

But if i set ssl support on a website and set:
Redirect http:

<IfModule mod_rewrite.c>
RewriteEngine on
RewriteCond %{HTTPS} !=on
RewriteRule ^(.*)$ https://%{HTTP_HOST}/$1 [R,QSA]
</IfModule>

If i do that, then i can't access the website anymore.

Why? I dont know?

Hope someone can help me.

Greetings,

Albert