How do I get the menubar to change?

[David Burgun]

Hi,

I have a menubar that I have changed dynamically, however, it doesn't 
display as the main menu unless I save the stack first?

I have tried setting the menubar property, showing the menu bar and 
hiding and then showing the menubar! How do I get it to refresh with 
the current menubar object?

Thanks a lot
Dave