I have an AGOL map with a collection of points representing parking spaces. Currently they are symbolized by space type (visitor, assigned, ADA, etc). I'd like to just have them symbolized red or green depending on whether or not the space is assigned to an employee. Is this possible with an Arcade expression? I want the parking manager to be able to quickly see whether a spot is free in Collector, and then assign it to someone. Then I want the color of the spot to automatically change from green to red.