Passing data to Actions

Hi,

I'm trying to build my first IDEA Plugin so please excuse me, if the question is a bit basic. Maybe someone can help me with this:

I have a Tree. On right click a context menu with an Action should be displayed. To this point everything works fine. Now the Problem: In the called Action, I need access to some data, but I have no idea, how to solve this.

    private void addTreeListener()
    {
        myTree.addMouseListener(new PopupHandler()
        {
            public void invokePopup(Component comp, int x, int y)
            {
               /* No idea, how to pass the data to the action
                DataContext dataContext = DataManager.getInstance().getDataContext(myTree);
                DataManager.getInstance().saveInDataContext(dataContext, CreateBeansAction.DOCTYPE_MODEL, doctypeModel);
                DataManager.getInstance().saveInDataContext(dataContext, CreateBeansAction.DOCTYPE, getSelectedDoctype());
                 */
                AnAction action = ActionManager.getInstance().getAction("com.monday.cmidea.CreateBeansAction");

                DefaultActionGroup group = new DefaultActionGroup();
                group.add(action);

                ActionPopupMenu menu = ActionManager.getInstance().createActionPopupMenu(ActionPlaces.UNKNOWN, group);
                menu.getComponent().show(comp, x, y);
            }
        });
    }

Thanks in advance!
Jan