[vbronald]

Andy:
I did what you asked and unfortunately there is no text shown anywhere on the page.
Man this is my fist time editing vbulletin and that makes thinking to a solution difficult.

Lynne:
Indeed. The global_start plugin runs the plugin.
The plugin runs the php-file and set the result in the variable $includedphp.

I put the variable in the right place with the Style Manager.
Now..
When I put the variable in the style-template ad_header_logo then the value of the variable is shown correctly>
But when I put the same variable in the style-template postbit then the value of the variable is not shown.
Remarkable is that when I put direct text in the style-template then it is shown correctly.