How to use Dynamic Material Instance on Landscape?

I want to implement a game like Crusader Kings, I need to use Dynamic Material Instance to show dynamic border and territorial limits by transfer a dynamic texture as parameter.
To us Dynamic Material Instance on Landscape,I follow this article:

But it doesn’t work on landscape!
This is my test implementation:

  1. A Simple Test Material With a Parameter(Default Red)

  1. Set MID to Landscape Comps and Set Color to Green.

Finally,
It is correct on landscape material’s detail panel.

But it is still RED…

343258-ans.png

Use a material parameter collection.

1 Like

Yup, this worked. The landscape actor even has a field “Use Dynamic Material Instance”, but clicking that field has no apparent effect.