Random ore generator

[Girlfy]

I'm trying to make a random ore generator for a server when cobblestone forms. I've found a couple skripts but none seem to work. This is the skript 

on block form of cobblestone:
    chance of 50%:
        set event-block to diamond ore
        stop
    chance of 3%:
        set event-block to gold ore
        stop
    chance of 5%:
        set event-block to iron ore
        stop
    chance of 10%:
        set event-block to coal ore
        stop
    chance of 0.5%:
        set event-block to emerald ore
        stop
    chance of 1.2%:
        set event-block to redstone ore
        stop
    chance of 1.2%:
        set event-block to lapis lazuli ore

Can anyone find a working one for this current version?

[VastureAlt]

Do any errors come up when reloading this skript?

 

[Lapzzo]

Hi, unfortunately, I cant fix this, but next time, if you need help with skript, post it in skript discussion.