Random Thunder sound as Variable Array

Hi im trying to make a variable array which will play random thunder sounds, I have 2 different triggers, they look like this.
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Map initialization
Set Randomthunder[random number 1 through 4] = ThunderPlay
Set Randomthunder[1] = thun1
Set Randomthunder[2] = thun2
Set Randomthunder[3] = thun3
Set Randomthunder[4] = thun4

Periodic time event= every 20 seconds of the game
Play ThunderPlay

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Ive tried this for a variable array but it doesnt seem to work, any suggestions for a way to get these thunder sounds to play every 20 seconds of the game?

You've got it backwards. The first action in the trigger will set Randomthunder to ThunderPlay. You want it the other way around.


Set ThunderPlay = Randomthunder[random number 1 through 4]

Thanks man, I didnt think it made a difference.

it would be nicer if you did every 20 seconds play RandomThunder[random number 1 to 4] as that would make it alternate.