[Flow] Injection of PHP Classes

[Christian Loock]

Hi,

I wonder, why I cannot inject Classes provided by PHP.

For Example:

     /**
      * @Flow\Inject
      * @var \DOMDocument
      */
     protected $myDomDocument;


Does not work. I cant find the class, also it should find it easily.

Any reasons why this does not work?

Greetings,

Christian