Separate Inventories For Each World

Hey guys! I'm having a bit of an issue. It have a Creative Plots world and a PVP (survival mode) world. The issue is, people are able to take full diamond and put it in their inventories on the creative mode world and bring it to the PVP world.

How can I make each world have a separate inventory so people can't take items from one to the other? Or if that's not possible, separate inventories for each gamemode would work too.

Thanks

 

Handle levelchangevent and save the inv, then clear the inv, then eventually load the saved inv fot the target world

 

I swear I remember there being a plugin for this, but I did some searching around Pocketmine and I couldn't find anything. There might be something on Github?

 

LIAB by @aliuly

 

https://github.com/Muirfield/bad-plugins/tree/master/LIAB

 

I think that plugin has an outdated API, if I am not mistaken.

 

Update it...

 

i think we best made a new plugin