[SOLVED] LIFX Lamp not staying on after Sunrise Event in OH2

My Rule fires, but doesn’t turn on the lamp.

home.rules

rule BeforeSunset
when 
	Item SunElevation changed
then
	var DateTime sunsetTime = new DateTime((Sunset_Time.state as DateTimeType).calendar.timeInMillis)
	if (sunsetTime.minusMinutes(60).isBefore(now) && Lounge_Toggle.state==OFF) {
	    logInfo("rule", "Firing Sunset in 30m")
  		Lounge_Brightness.postUpdate(80)
		//Lounge_Toggle.postUpdate(ON)
	}
end

The log has…

15:03:59.885 [INFO ] [marthome.event.ItemStateChangedEvent] - SunElevation changed from 6.29 to 5.82
15:03:59.891 [INFO ] [.eclipse.smarthome.model.script.rule] - Firing Sunset in 30m
15:03:59.942 [INFO ] [marthome.event.ItemStateChangedEvent] - Lounge_Brightness changed from 0 to 80
15:04:01.294 [INFO ] [marthome.event.ItemStateChangedEvent] - Lounge_Brightness changed from 80 to 0

I can toggle the switch manually in ClassicUI and the app normally.

The fix is to use

sendCommand(Lounge_Brightness,80)

instead of PostUpdate()