[z0mb1el0v3r]

Thx wicho! It work~

However, I have a small problem with it.
When I put the limit more than 1, for example 2, after I bought the 1st one I can still buy the 2nd one while the 1st one is still available with me. Is this a bug or something? Can you make it go transparent after I bought it until I have used the item, then I can buy the second one again?