Problem about exit time of Animator Transition

I know exit time can be change in Transition Setting like this pic. But I don't know how to change exit time by script. Can anyone show me how to do it? Here is the transition that I want to change exit time by script. Sorry about my bad English skill.

Here is script I try to do but it doesn't work

Animator _animator = gameObject.GetComponent<Animator>();

float _exitTime = _animator.GetComponent<AnimatorStateTransition>().exitTime;

 

Bump

 

I found it finally

Code (CSharp):

1. AnimatorController animatorController;
2. animatorController.layers[layerIndex].stateMachine.states[stateIndex].state.transitions[transitionIndex].exitTime;