That was horribly written and I apologize. Let me restate.
Current endeavor:
Getting notifications on print start and stop (for whatever reason).
I can currently accomplish this by using web actions and generating gcode for each printer and associating it with that specific printer. But since I have several of the same model, I was hoping to use one generated gcode file for all of them, as I've adopted a project-centric workflow (for both stl and gcode storage) to minimize duplication. I would like to be able to just have a single web action, that would allow something like $PRINTER_SLUG to be passed off for easy identification.
I fully recognize that I may just be using the system improperly, and feel free to point out my idiocy if that is the case (otherwise I might think it was clever and do it again). :)