This Unreal Engine 5.4 video is about Gameplay Ability System Attributes. Attributes are used for things like Range, Fire Rate, and Damage, and just about anything else that has a value, that you might want to modify using GAS.
We start by creating a Base Set class that overrides the Pre Attribute Change functions of UAttributeSet, and add a Clamp function that the Pre Attribute Change functions call. We then create the Tower Set and Enemy Set classes with their own sets of Attributes, and show an example of clamping Health to Max Health. Lastly, we print out the Tower Blueprints Default Attributes from the Tower Set.
https://dev.epicgames.com/community/learning/tutorials/vjvZ/unreal-engine-02-attributes-let-s-make-a-tower-defense-game