Can't change variable in a blueprint of a blueprint

I want to change a variable of the player in the levelblueprint. When you go over a trigger box the level blueprint should change the variable in the player blueprint. But it doesn’t work.


Make a Variable in your Actor BP to store the Data

In Level BP. from Event Begin Play, “Get All Actors Of Class” - Choose your Player BP, “GET”, “Cast to Player BP” (This should come up when you start typing CAST if you choose your Player BP ealier), then Promote to Variable.

Drag the Variable, from that, call your Variable in your character BP - SET, and set it with the Desired Variable. Example of cast below, I am just casting to Teleport BP instead in picture.