How to add a rounded-corner wall mesh in spline blueprint ?

Hello, I’m trying to create a simple blueprint spline to build walls for some blocking level design. I managed through tutorials to have a spline that spawns straight walls, but I’m stuck when it comes to having rounded corner meshes.

Is there a way to spawn that type of mesh when one point is inside a 90° angle inside my blueprint, without deformations or weird reactions?

Best regards !