Grassoutput at slope

Development Programming & Scripting Blueprint
1

Hello everybody,

I have an automatic painted Landscape Material in a Layer called CliffGrassSlope.
How can I tell the Grassoutput node that it only paint grass (mesh in this case) on the grass slope?

2

Or is there a way that I can say a layer can only be painted up to a maximum slope ? Than I could paint on my own it would be fine.