Make a crease in a brep surface with attractors?

Hello everyone,

How could i do a crease on a closed brep specific surface? I want to extract this specific surface and atract it to a curve, deforming the shape of this surface. but i couldnt do it by using closest points. Its something that is pretty easy with subd modelling, but i cant figure out how to do it in gh. Anyone can help me?|attachment (30.4 KB) (30.4 KB)