[AccessD] A2K: Make a custom menu item checked/unchecked

I've been Googling for this one, and found the (now obsolete) SetMenuItem function, as well as some cryptic message board posts referring to using the CommandBar and the State property, none of which seems to work for me.

Has anyone done this lately?  It seems to be that checking or unchecking a menu items should be one line of easy code.  I just can't figure out WHICH line of easy code it is!  ;)

-Christopher-