Nothing. Since you can call the HUD through the variable like this:
First create a new variable inside the level blueprint and name it preferably the same as your HUD.
Secondly, in the details panel change the variable type to point to your object which is your HUD (below is an image example).
And now you can drag this variable inside the level blueprint as a get -node. Now you can call any variable or function you’ve made in your hud inside the level blueprint. As the below image shows I have an refresh inventory function inside my Character_INFO HUD and I am calling it into the level blueprint now.
