Help! Terrain material with layers

Hello :slight_smile: i’m new to the forum and have a question about the terrain texturing using world machine splatmaps.
On internet there are a lot of videos and tutorial about it but when i go in unreal nothing work and the only thing i got is a black terrain.
Any helps ? :confused:

Up, anyone?

https://wiki.unrealengine.com/World_Machine_to_UE4_using_World_Composition

Thanks man :smiley: