The reason I am needing to use this is for several components that are the same in my system. I have a DVD stack of 4 Denons and depending on the DVD I initially choose I want the "Play" button to alias to the Device that outputs to the corresponding IR line output on my RF hub.

If I understand your recommendations correctly, I will end up with three "nested" buttons on a hidden page to systematically "walk a tree" of variables. My worst case scenario being that I have selected DVD_4 in the stack and my aliasing drills me down to my last variable controlled button which is aliased on state 1 to my fourth dvd device. If for example the button leads me to the last nested button and the state of that variable is "0" I need to have a prompt for the user to go back and select a DVD player right?

Please let me know if I understand it correctly. I appreciate all the help and quick response!