Hey @BramKn - Thanks for taking the time on this topic.
In the meantime, I’ve found a function return items[0].json allowing me to format the data in a way that I can filter the data correctly with an IF node.
In fact, without this node, I was stuck with a filter only on the first item [0].
PS: The article I was mentioning is the following :Data Transformation, Arrays, Object, Elements, Items, Functions, etc - #2 by dickhoning
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