[1.11] How to make player respawn in random areas?

[CBUltimate]

How to make player respawn in random areas? /setspawnpoint sets a cord as spawn point but I want to be able to spawn players in random locations. It's ok if it's in a 500 blocks radius of the spawn point. Help, thanks in advance.

[gurujive]

/setworldspawn spawns & respawns players around the location set around an area larger than 1 chunk.

[Animefan8888]

When they die get their spawnpoint and randomize it.

[gurujive]

When they die get their spawnpoint and randomize it.

 

114 and or possibilities 127 128 may be good numbers for a randomizer.