Different inventory for each world <Multiworld>

I'm using Multiverse for Bukkit to have multiple worlds. One of them is a survival world and one other a creative world. Because it's very easy to cheat this way (you just go to the creative world, grab all the stuff you want and teleport back), I want to make it so that if you would go to another world, you get the inventory you last had in that world, or an empty if you first come there. I have no clue of how to do that (yes, I checked the multiverse config's), so i was hoping someone here could tell me. I only have the Multiverse core plugin as multiworld plugin.

 

http://dev.bukkit.org/server-mods/multiverse-inventories/

 

Use Multiverse Inventories or Multiinv

 

Ok, Multiverse Inventories works fine until you want to go to the nether in the survival world. You cant take stuff in and out of the nether and its pretty annoying. Anyone a solution?

 

Set up your Multiverse-Inventories to allow your items to move between those worlds.
See here for details:
https://github.com/Multiverse/Multiverse-Inventories/wiki/Sharing-Details