ComInterop With Office CommandBarButton Events

I am having trouble getting the following word events to fire in my code.
What I am attempting to do is add a new menu item and then assign the
click event to a handler in my C# code and get this to fire when the user
clicks the menu item.

Here is the code sample:

_CommandBarButtonEvents_ClickEventHandler clickEventHandler = new
_CommandBarButtonEvents_ClickEventHandler(commandBarButtonClickHandler);

//Open an existing document.  Both the DocumentOpen and
//DocumentChange events will fire.
int commandBarControlType = 1;
string parameter = "My click Event";
Office.CommandBarButton cbControl = (Office.CommandBarButton)
app.CommandBars["File"].Controls.Add(commandBarControlType, Missing.Value,
parameter , Missing.Value, true);
cbControl.Caption = "BRIAN's Button";
bControl.Click += clickEventHandler;

I get other events to fire for the document opening, closing and changing
but I can not get the event to fire if it is prefixed with the "_".

What do I need to do to get this event to fire in my code.  Is there
something that I am doing incorrectly?

Brian Hormann - MCP
Interact Commerce Corp.

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