This strategy is the well known set & forget with the ALERTING system. It is very useful on different trading scenarios. I urge you guys to always use trading tools that will make your live easier. So instead of watching the charts and the time and all day long, you can use this indicator that will watch the charts for you.
HOW TO USE IT :
You can check the following video that will show you 2 scenarios in which the alerting system is useful for the set & forget strategy.
This script has 2 inputs, which are
Trend indicatorMemento - behavioral design pattern
without violating encapsulation, capture and externalize an object's internal state so that the object can be restored to this state later