on right click on sign:
    set {_spawn} to a random integer between 1 and 20
    if {_spawn} is 1:
        teleport the player to location of {spawn1}
    if {_spawn} is 2:
        teleport the player to location of {spawn2}
    if {_spawn} is 3:
        teleport the player to location of {spawn3}
    if {_spawn} is 4:
        teleport the player to location of {spawn4}
    if {_spawn} is 5:
        teleport the player to location of {spawn5}
    if {_spawn} is 6:
        teleport the player to location of {spawn6}
    if {_spawn} is 7:
        teleport the player to location of {spawn7}
    if {_spawn} is 8:
        teleport the player to location of {spawn8}
    if {_spawn} is 9:
        teleport the player to location of {spawn9}
    if {_spawn} is 10:
        teleport the player to location of {spawn10}
    if {_spawn} is 11:
        teleport the player to location of {spawn11}
    if {_spawn} is 12:
        teleport the player to location of {spawn12}
    if {_spawn} is 13:
        teleport the player to location of {spawn13}
    if {_spawn} is 14:
        teleport the player to location of {spawn14}
    if {_spawn} is 15:
        teleport the player to location of {spawn15}
    if {_spawn} is 16:
        teleport the player to location of {spawn16}
    if {_spawn} is 17:
        teleport the player to location of {spawn17}
    if {_spawn} is 18:
        teleport the player to location of {spawn18}
    if {_spawn} is 19:
        teleport the player to location of {spawn19}
    if {_spawn} is 20:
        teleport the player to location of {spawn20}