I’m not exactly sure which function you’re referring to when you say “this”. The AddComonent function is already marked as BlueprintCallable and usable in blueprints and their construction script. When you use the “Add Box Collision” or “Add Static Mesh Component” nodes, it is calling the AddComponent function with the type of component specified by the node. If using one of these nodes doesn’t work for your case, I would try reviewing the code for AddComponent() to see how it can be used in the Construction Script without issue.