Joe,
It's grayed out because it's readonly.
If you edit the toolbar class and drop another control into it, the ControlCount will increment.
>I am trying to add a new button to our maintoolbar, which is part of a class. It was created with a control box and the current control count is 10, and I need to change it to 11. The Control Count property is grayed out. Why would this be? How can I change it?