In the case of Geo Curve To Surface contact, a curve geometry type is supported as an action body and surface geometry type is supported as a base body. If curve or surface is flexible body, it should be defined to line or patch set.
•Surface(PatchSet), Curve(LineSet)
•Surface(PatchSet): Selects a rigid surface or a patch set to define a base surface.
•Curve(LineSet): Selects a rigid curve, an edge or a line set to define a action curve.