Closure changes

In some old scripts I had code that looked like this:

frame = swing.frame(title:'Install', location:[100,100], size:[800,400] ) {
  panel(layout:new BorderLayout()) {
    scrollPane(constraints:BorderLayout.CENTER){
      table(model: setupTableModel) ;
    }
            
    panel(constraints:BorderLayout.SOUTH){    
      button(text:'OK', actionPerformed:{event | frame.dispose();
doFullInstall() });
      button(text:'Download Only', actionPerformed:{event | frame.dispose();
doDownloadOnly() });
      button(text:'Cancel', actionPerformed:{event | frame.dispose() });
    }       
  } 
}

This fails in beta7, I've had to change the button code to 

button(text:'OK', toolTipText: 'Download and install selected items',
actionPerformed:{event | doOKAction()  });

etc..

and add extra methods.

Is this expected?

Thanks,

Kevin Jones
http://kevinj.develop.com