How can I move curve along to other curve?

Hello, I want to move the red curve down with this direction (green curve on the object).

test.3dm (218.0 KB)

And, I know that i can solve it like this

But i’d like to move with specific distance or length of my own.

Thanks for your help :smiley:

IMO,Evaluate Lengthis what you need. (60.4 KB)


Evaluate Length, Perfect.
Thanks! this is just what i looking for :smiley: