Russian Roulette selector Created 17 years ago2007-01-30 16:23:47 UTC by Instant Mix

I am trying to make a map based on Russian roulette , the tv series.
I am not sure how to make the buttons near the doors , telling it to select that one. I am not sure If i have to make a seperate one for each button , or use a multisource that activates a different sequence for the number selected,

Btw , its the fall-thru-the-floor russian roulette