World composition landscape material black

Hello,
Im trying to use the World Composition feature, but when i apply my landscape material it’s appears in black (the material looks fine in a no World Composition world).
I test with other simple materials and there is no problem.

What i’m doing wrong?

Thanks!

Have you set the corresponding layer info for your material layer like this? If yes, then simply draw the lowest layer on the material across the landscape chunk.