How to move an object along a curve preserving the orientation of the object

Hi, I am Looking for moving a surface along a curve with grasshopper. I am trying with orient direction and it works, but it rotates my in different ways.


the objects are share the same curve shape, so it would should match perfectly. Actually it is a piece taken by the top surface.

20180924_Circle (50.9 KB)

Any ideas?

Thank you