Help Test if rope is tense, and extend it in code

[usernameHed]

Hello, i have a rope attached on 2 player. I want to test in c# if the rope is tense enougth, and if so, extend the rope (when the player it a button for exemple).

I have found in GrapplingHook the way to extend the rope, with [ObiRopeCursor].ChangeLength([ObiRope].RestLength +- value;
Now, how can I test if the rope is more or less tense ? I could test the distance maybe...

I just bougth Obi rope, please be explicit