This is simply feedback for you to improve your courses (already amazing, but why not make it better, right?).
In the supplemental video, "Pipeline - Escalation", you wish to alert managers after the operators have been notified three times. However, in the setup you show in your example, the count will be incorrectly biased up by one. For example, after the operators have been notified only one time, when the expression block checks the "numTimes" property, the count will be two (2), as you have counted the first Operator notification twice. It seems you can easily correct this by initializing the "numTimes" property to 0 instead of 1.