Larian Studios Forums Divinity: Original Sin 2 - The Modding Dungeon Divinity - Original Sin 2 - Modding General on item check script coding

You can check whether the character has an item with the correct template in its inventory. Unfortunately, while this is a simple count in story/osiris (CharacterGetItemTemplateCount), in behaviour script it's a bit more complex:
* if you know the item has a certain tag or stats, you can use ItemGetFromInventory()
* otherwise, use IterateItemsInInventory() and then in the iteration event call ItemGetTemplate() and compare the result to the root template of the item you are looking for.