Some pros for notifier that come to my mind : 1) Possibility to pass data. This is like a variable but without the need of polling --> no CPU usage while waiting.
2) They allow to wait for multiple notifications --> possible to synchronize more than 2 parts of independent code 3) A notifier can be cancelled easily. 4) It is not absolutely necessary to transmit the reference number of a notifier to the different parts of code. You can use its name. There is a description of notifiers in .\examples\general\notifier.llb\Notifier BASICS Part 1.vi If you only need to synchronize two independent parts of code, then occurences will do the job very well. But if you need more functionnality, then occurences are not the way to go.
