That's horrible. God, this site. I mean, to be absolutely honest with you, I'm relieved I'm not the only one who finds it completely bonkers.
But let's see, what you're trying to do is roll a psy check (2d6), and a BS check (d100). Right?
Here, let's see how I fare at the same rolls.
Ok, nopes. Oh, it rolls the dice alright, but it makes no fucking sense. I ... I don't know what to say, it really feels like this is the work of someone who knows some code, and heard something about some dice, but otherwise have no clue what so ever what people would use it for and how.