Problems with Config file in custom Libarys [solved]

[eluser]n8m[/eluser]
Thanx for the feedback,
but it still doesen't work. My Config file looks like this:

Code:

$config['foo']="bar";

and my Library like this:

Code:

class Widget{
        
        public $CI;
        
        function Widget(){
            $this->CI = & get_instance();
                $this->CI->load->config('widget');
        }
        
        function dialog(){
                    
            echo $foo;
                }

The error message tells me that "Message: Undefined variable: foo".