Creating a point on Spline/Curve

Hi There, I need some help in creating a topmost/closest point on the peak of profile of a spline/curve by creating a minimum distance with respect to a plane. When I run a Journal it is generating its own identifier as shown below which cannot be used with a different part.

spline1 = workPart.Splines.FindObject("ENTITY 9 12 1")
measureDistanceBuilder1.Object2.Value = spline1

It would be a great if someone can help in coding to replacing the identifier with different name, where I can run the journal for different parts too.

Currently I am using Python interface, Visual basic is also fine.

Thanks