I have a program with a Test element. It's testing to see if a light is on or off. I'm looking at the light and I can see that it is off, but the test element says it's on. Why?

[HCA Admin]

Unless the device responds to status requests, the Test element when testing for On, Off, or Dim bases its decision on the internal HCA device state. For example, if you use HCA or a control panel to turn a light on, HCA records that device as ON. If you turn it off using a wall switch, that switch didn't transmit its action - it just turns the lamp off. At this point HCA thinks the light is ON but it's not. In this case the test element will take the success path from the element - you tested for on, and HCA's state for that device shows it as on.