How can I add layers?

Hi

I’m a Blender user and I’m trying to learn UE4 now.

I’m trying to add layers to my landscape so that I can create dirt layers, rock layers, etc. to add onto my grass landscape.

I added the textures, connected the nodes to MakeMaterial Attribute and connected it to my landscape *having clicked on Use Material Attributes. Then I added a Layer Blend Node than I added a layer to it, or two or three, you can add many more, then i connected my materials to the Layer Blend Node and the layer blend node to my landscape clicked apply and NOTHING HAPPENS. Nothing appears on my Layers in Landscape mode, and I cant paint with my brush different layers of dirt or rocks or whatever. It’s frustrating, what’s going on?

Hi, sometimes it does not update, for me applying a different material to the landscape and then again the previous material again solved it.