We don’t currently support variable end times with the Interface Builder. This is something we’re working on currently, but will probably not be out until the end of November.
If you’re comfortable with HTML you can use our FlowJS library to add a conditional to make this happen. If you have a model variable called “IsGameOver” defined as “isGameOver = blackoutrisk > 60”, you can use that variable in HTML to conditionally show/hide UI elements. Something like
<div data-f-show-if="IsGameOver">Game is over, blackout risk exceeded</div>
Relevant documentation is here. We’re happy to provide more specifics if you want to use that, or otherwise we’ll let you know when this is available through the Interface Builder.