Mesh materials not applied to strokes

I’m using UE 4.23 I’ve setup the StrokeMeshes and the Joint Meshes in my BP_Stroke blueprint just like in the video, however with I apply the M_Stroke material to each statick mesh it does not apply the material to the mesh when I run it. I still get the default “non” material gray look to the Meshes.

If you drop those meshes in the world, do they have the correct material? How are you spawning the meshes? Don’t you need to specify the material slot there?