Help Extractable items

Tested & working.

I'm just using a ready code from class master rewards.

https://pastebin.com/HVhtQ7kj

Don't forget to add the handler to your item.

- Config explaination:

boxId;[];[itemId1(itemCount1)],[itemId2(itemCount2)],[itemId3(itemCount3)];

9308;[];[57(100)],[57(1000)],[57(10000)];

And you can add as many items as you want.