You could put that Logic on a Button .. have that Button Triggered by a RossTalk Message. Then change it that the incoming GPI fires the RossTalk to the DashBoard panel to trigger the button that will run the logic of checking the source.
Another option is to do it in hardware and put an And Gate or Relay which you use a switcher Tally to connect the path that will then allow the GPI to pass through to the switcher.
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Les O'Reilly
Director - Switcher Product Management
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