Hi Sarah,
4 days ago I did an article of my misadventure and hacking with Revolution Slider -> http://goo.gl/UKg9sB (fell free to remove that link)

So far I have not given the means for others to replicate this hack, but the way to protect... I've also warned the authors (theme and plugin)

In my opinion it is dangerous to give this line of code and the explanatory video hackers...