Protip: This is not a tutorial. It's a request. It really does not belong in the tutorials section...
That being said, if you can provide a link to the VXA event system you saw, as F0 said, I might be able to convert it to an XP one (well, not convert, more like replicate). I doubt there's a way to do it without any scripting though (I'm actually pretty good with eventing, so, I would like to be disproven on this).