I might suggest "states" on the boxes, controlled by variables (or "if" logic in the triggers) to restrict which box is "active". The "Disabled" state is one of the standard states for objects in SL
Thank you ... I do have the state of the box change to visited after it plays the voice over assigned to it. I will have to investigate the "if" triggers to restrict which box is active.
FYI: Visited is a built-in state. Any object with a Visited state will automatically change to Visited state when it is clicked. Triggers that duplicate that built-in functionality can actually cause problems.
