Randomly select a number

This may sound a little complicated as i dont know how to explain it any differently, but what i'm trying to do is, im trying to make it so that, when the event is triggered a number is randomly selected, and if the number is say like 1 or something, something will happen, but if its 2 something else will happen. Any ideas

P.S im not sure if you can get the random number procedure block and then do an "If - 1 do"