Hi, Another question this time about Inventory items, I'm still a bit unsure about how to structure scrpits, I've got a good idea how it should go but what I'm looking for is a way to make an item "un-droppable" or "un-removable" unless you use another item on it and at the same time seal doors if you have the item in your inventory so for example:

You are wearing a detonator collar, there are metal detectors on the doors which stop you from leaving, you need to find the key to remove the collar before you can proceed through a door.

Any ideas?

My current line of thinking is create two versions of the same item, make the droppable one invisible and the locked one already in the inventory, when the key is used on the locked version the following scripts will play:

use object on object to Unlock.
Remove/destroy original object
make Invisible object visible/or create object in inventory.

Would you say this would be a way of achieving the results I need?

Yes. That would work. Instead of making the object invisible-visible, I've always used the move object script instead - I'm not sure why. I keep all my objects in a dead room instead. But, I think it'll work either way.