Required for currency to work:

• https://dev.bukkit.org/projects/vault

Setting the Price to Enter a world

To set the price to enter a world, simply go to that world and type /mvm set price X where x is the amount to enter.

Want to use items?

Simply type: /mvm set currency ITEMID where ITEMID is a Minecraft item ID. You can find a list of them here.

Don't forget to set the price!

[Example] Let's set the entry to a world named FernWorld to 5 dirt

/mvm set price 5 FernWorld
/mvm set currency 3 FernWorld
It's really that easy.