Why Can't I add a plugin

[hicham65]

Hi;

I've added a plugin with the following code, this should allow me to include another html file into my header section;

$my_header = implode('', file('../main.html'));

However when I added the variable $my_header into the header section of the style, I seem to get the following displayed on the top before the logo:

$my_header

Why the plugin is not working? I should expect the content of the included html file to appear before the logo.

I have enabled plugin on the whole of my VBulletin

Any advise will be appreciated

Thanks