How can I move curve along to other curve?

[Hoeun]

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

[HS_Kim]

@Hoeun

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

IMO,Evaluate Lengthis what you need.

Test_re_ver1.gh (60.4 KB)

[Hoeun]

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