Stop timer and reset to null. Structure of rule okay?

[vzorglub (Vincent Regaud)]

Have a look at the expire binding
Much, much easier…

Design Pattern: Expire Binding Based Timers

Problem Statement One often needs to schedule some code to execute at some time in the future. The “usual” way to achieve this is by using a Timer which lets you create and schedule a lambda to execute at a given date and time. However, Timers have their drawbacks including: the need to keep track of open Timers so they can be canceled at a later date, often requiring the use of HashMaps or some other data structure rescheduling or creating a cascade of Timers is challenging (i.e. when a tim…