i believe 'pick random object' is used more for existing objects, not for picking objects to spawn from a group of non-existing objects.
what you could do to pick a random piece --
condition for spawning new piece
-set private variable to Random(7) (replace 7 with however many possible pieces there are)
if private variable = 1
trigger once while true
-spawn piece 1
if private variable = 2
trigger once while true
-spawn piece 2
and so on
[quote:2iz066v7](Perhaps the real question:)
But when selecting "pick random object", I only get to choose 1 object. So how can it select randomly, from only 1 object? I would like to have a random choise between multiple pieces.
well, for future reference for other applications, you would add all the pieces to a family and then pick random object from that family. but again, pick random object wouldn't really work for this situation, i don't think.