Can using a Laudanium call a callback?

[Russ Money]

Interaction callbacks are being called the moment you pick the item, not the moment you use them. You can check player health instead whenever it opens or closes inventory.

In fact you fall down in a really big descent. and the health must be 99, but if someone's smart can just sit there and wait, and take the laudanium later

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Help please i need it to continue the script of my map :/ Shall I edit the inventory.hps?

Editing the inventory.hps wouldn't do anything, I believe that's mainly used for combinations. If you anticipate the player would use the Laudanium when they got it, you could set a short timer that after they pick it up, it would fade to black. Otherwise I cannot think of a way besides checking their health to see if it "stablized" meaning they used the Laudanium.