Problems with previousState

[hr3 (Harry)]

Calculate time between two rules firing (time door is open)

DOH! While writing below I found at least one major error. var DateTime timeDooropen = now.millis - doorOpen.millis This makes no sense. millis is a long, not a DateTime and while the Rules DSL does a bunch of stuff for you, it can’t convert a long to a DateTime. You must create a DateTime (i.e. new DateTime(now.millis - doorOpen.millis)) but that doesn’t really make sense because that will likely give you a DateTime sometime around 00:05 1970 January 1, not “five minutes” which is what you re…