How to change the speed of an animation?

Hi, I have a player gameobject, to which i attached an Animator. Then in this animator, i created several animations, via the Animation tab in unity. One of those animations is called “Running” and i need to change the speed of this animation from my c# script during runtime. But i can’t figure out how to access this animation and change its speed from the script.

In my c# script, this is where the animator object, which contains the Running animation, is saved:

var animator = GetComponent<Animator>();

So how do i go from here?

animator.speed = animSpeed;