Question Need help for simple blend tree

Hi all,
I need help to build a simple blend tree.
I have 3 animations turn right 90 degree turn left 90 degree and idle
And I want to blend them using turn velocity (velocity.y) as far as I know
The problem is I couldn't achive to transfer velocity.y value or turn angle to blendtree parameter successfuly
I how can I do it?

 

I'd just pass a value between -1f (turning left) and +1f (turning right) to the blend tree. Idle would be 0f. You could make the value as angle/90f if you wanted better blending. Not sure why you need velocity.y but I'm sure you have a good reason for the effect you're going for.

 

how exactly can I do it?

 

How do you get input from the user to turn your model left or right?

 

That is the point where the problem begins.
It is navmesh agent and it is driven by AI, I just need it to move its legs when it turns around 1-360 degrees