Dynamically spawn/edit Landscape brush

Hello, using the Landmass plugin, trying to figure out the basis of having a procedurally generated , seed based / multi-biome world.
For some time was using the voxel plugin, but has its draw backs (especially the support for nanite foliage) so with no other solution in sight, turned to unreal’s tools (also because of this new 5.2 Procedural generation tool)

While experimenting with Landmass, my question here is can you dynamically add a (child of) Landscape Blueprint Brush in the world and make it work? while also changing the seed? (need many brushes because of multi-material biomes)

If I attempt to just spawn a Custom Brush Material Only, it wont work when I hit play.
Any direction to this?

Thanks!

Any updates? I am trying to figure out very similar case.