New for Power Scripts 5.8.0.x, SIL Listeners for the Issue events can be filtered by specific Project and Issue Types. So, if an issue event is triggered for a different project or issue type, the SIL script will not get triggered for that event.
In order to add a filter for a listener:
Click the Add Listener (or edit the listener) button
Add and issue specific event to the Select the events you want to react to setting
New project and issue type drop downs will appear
Select the project(s) and issue type(s) that the SIL script should run for
The Project and Issue Type fields will not appear unless an issue specific event is selected.