Question by kzl95 · Jun 07, 2016 at 01:18 PM · animation 2d animation animation script

reverse animation error

im trying to scale my character using animation on button press, this is the code im using

 using UnityEngine;
 using System.Collections;
 
 public class characterControl : MonoBehaviour {
 
 
         Animator anim;
         void Start () 
         {
             anim = GetComponent<Animator> ();
         }
 
         void Update () 
         {
             //--------------------------Expand----------------------------------------
             if(Input.GetKeyDown(KeyCode.UpArrow))
             {
             anim.Play("I");
             anim.speed = 1;
             }
 
             if(Input.GetKeyUp(KeyCode.UpArrow))
             {
             anim.Play("I");
             anim.speed = 0;
             }
 
 
             //-------------------------Contract---------------------------------------
             if(Input.GetKeyDown(KeyCode.DownArrow))
             {
             anim.Play("I");
             anim.speed = -1;
             }
             if(Input.GetKeyUp(KeyCode.DownArrow))
             {
             anim.Play("I");
             anim.speed = 0;
 
             }
 
         }
     }

but im getting this error