Can’t change my collisionshape2D position using script

Godot v4.3

How do I change the collisionshape2D’s y position using script?
I’ve been trying to follow a tutorial for creating a crouch in my game, but the tutorial is in GDscript and I managed to recreate all code in csharp except for the last bit and now I’m stuck. Can someone tell me how I change the y position of my collider?

The code is:
CLShape.Shape = CCLShape; //works
CLShape.Position.y = 12.25; //doesn’t work

Make sure to post the errors you recieve too.

You cannot change the vector components on their own and must create a new vector to change the y position.

CLShape.Position = new Vector2(CLShape.Position.x, 12.25);