This .NET method wraps the ObjectARX method AcDbSubDMesh::setCrease(AcDbFullSubentPathArray&, double).

Public Function SetCrease(
    subentPaths As FullSubentityPath[], 
    creaseVal As double
) As void

public void SetCrease(
    FullSubentityPath\[\] subentPaths, 
    double creaseVal
);