Properties of CommandBarButton cannot be modified in it's own click event handler?

[Hurry Wood]

I works on Word 2k.
I want to modify property Visible of CommandBarButton in it's own Click
event handler. After some tries, I find that the property Visible of
CommandBarButton cannot be modify from it's own click event handler, it
means that the CommandBarButton only can be modified from other button's
click event handler or else. After some research, some methods of
CommandBarButton also cannot work in it's own click event handler (e.g.
CommandBarButton.Move). Is that truth?


Hurry