How to add a "If player is in zone feature"

[ghost]

Hi Tigo,

Im wondering if it was possible to create a say "locked" state on the menu buttons. What im wanting to do is restrict the certain button to only work when a player is in "xyz zone" and when they aren't in the given area the button displays locked and can't be pressed/triggered. This meaning if say the player isn't at the top of mount chiliad the button is greyed out with a lock on the side of it. (image attached below of button)

Any help would be greatly appreciated by anyone.