Set Animator Parameter based on move direction?

Hey i am working on a twin stick top down game.
left stick: move - left right up down.
right stick: look in the direction the stick gets dragged

works all fine but now i wanna combine that with some animations.
so when i drag the left stick to the left and the right stick up i want in the animator to be:
Horizontal: -1 Vertical: 0
so i can play a walk sideward animation

but when i drag the left stick to the left and the right stick to the left too i want in the animator like:
Horizontal: 0 Vertical: 1
so i can play a walk forward animation

how can i do that?
here is my code so far for the movement:

Code (CSharp):

1.  
2.  
3.         var _camRel = _rightStickInput.y * mainCamera.transform.forward + _rightStickInput.x * mainCamera.transform.right;
4.         var axisDirection = _camRel + transform.position;
5.         _lookAtTarget = new Vector3(axisDirection.x, transform.position.y, axisDirection.z);
6.  
7.         transform.LookAt(_lookAtTarget, transform.up);
8.         var controlDirection = new Vector3(_leftStickInput.x, 0, _leftStickInput.y);
9.         var actualDirection = mainCamera.transform.TransformDirection(controlDirection);
10.  
11.         _animator.SetFloat("Horizontal", controlDirection.x);
12.         _animator.SetFloat("Vertical", controlDirection.y);
13.