I call my macro from a button in the quick access toolbar. When I load my template which contains a bookmark I want the button enabled. When I load a different template that does not contain the specific bookmark I want the button disabled.

How do I do this? I can't see how to enable / disable the button. I could use the custom ribbon if this would work better, or an alternate method.

I think you can see what I am trying to achieve.
I'm using word 2010.

Thanks in advance for your help