[SCRIPT] Checks whether you got an item

[Your Computer]

It's not working for my lantern?

Maybe the lantern gets treated the same way as tinderboxes. I haven't tested it if that's true, but an alternative method would be to use an interact callback on the lantern and set a global variable in the callback. Then instead of using HasItem to check for a lantern (assuming you're trying to check if user has a lantern in their inventory), you just check if the global variable is set.