animation clip speed

Hello! i stuck here with some situation. please sorry i am not a good programmer. i have an object follow a target the target is moving with the mouse cursor (the camera is in Z axis like a 2D game). when the object travel smooth in X axis , then, play one animation clip. when the object travel in Y axis i need to play other copy of the same animation clip.

I dont know why, but in my script the clip only play in x axis. I am using smooth velocity, and the animation speed to smooth the animation clips.

the problem is in in the animation speed. i have a vector3.lerp here to obtain the X and Y axis for smooth travel. then i need to pass boths velocitys

i create two clips becouse i dont know how to use speed in one clip independent if traveling in x or y. (one animation clip two velocitys axis)

sorry my english i paste the code here.

Thanks so much!

     // The target follow object
     var target: Transform;
     
     var speed: float;
     var previous : Vector3; 
     var velocity : Vector3;
 
     animation.Play("flyingX"); //both are the same animation
     animation.Play("flyingY"); //both are the same animation
     
     function Update () {
 
         var step = speed * Time.deltaTime;        
         transform.position = Vector3.Lerp(transform.position, target.position, step);                
         velocity = (transform.position - previous) / Time.deltaTime; 
         previous = transform.position;    

             //passing smooth velocity to the animation  speed
         animation["flyingX"].speed = velocity.x / 20; 
         animation["flyingY"].speed = velocity.y / 20;
         
         
     }