[SOLVED/I GOT PM]Strange HPL function

[FlawlessHappiness]

What i was trying to do is:

In this custom story you are playing as 2 people.
1 of them has went down to get some items, and is now back with 2 items, a hand drill and a poison gland.

If you change to the other person the 2 items will disappear. If you change back they will reappear.

Now: The person with the items (Mark) has to give the items to the other person (Simon).

There is a platform above a big hole where he can put them.

SCRIPT:

if nothing is on the platform = Display: "There is nothing on the platform" (Already here it went wrong)

if use 1 item on the platform, item disappear from inventory, and appear (static) on platform.
if touch platform, (Playing as Simon) Static-item disappear and Simon gets the item.

You should be able to put both items on the platform. and be able to pick up both items at once.

Then when you have picked both items up, you shouldn't be able to put them back again.

I tried the first thing with displaying a message. Instead of displaying it, it picks up the 2 static, inactive items on the platform...