Group Status via Web Hook

We use webhooks to lite lights in the ceiling above call groups when tickets come in.  It would be helpful to to have a variable that can be keyed based on the Department/Group that Give the Highest priority ticket that is not yet handled in the system for that group.  IE:  Urgent, High, Medium, Low.  That way we can have the light change color to indicate the priority of any waiting ticket.  If no waiting ticket it would be OFF.