Access a custom property in a custom class

I guess I have a newbie question, but I couldn't work it out yet...

package components {

    public class templ开发者_如何学JAVAateSelection extends VBox {

        static public var tempSelectionBag:Dictionary;

        public function templateSelection() {
            super();
        }
    }
}

I want to have a custom class tempSelection with a Dictionary as a public accessable property of that class. If I use this code, the compiler tells me:

1046: Typ wurde nicht gefunden oder war keine Kompilierungszeit-Konstante:Dictionary

Which translates to:

Type was not found or was not a compile-time constant: Dictionary

Any help is appreciated!

Markus

The error message in English:

Type was not found or was not a compile-time constant: Dictionary

To fix it, import the Dictionary class into your program:

package components 
{
    import flash.utils.Dictionary;
    .
    .