Trigger animtaion when hit

Hi guys, im not a very experienced scripter and never used c# before (actionscript 2 and little 3 only). Trying to get an object's animation to play when it gets hit by another object. i've tried to search out a solution in js and c# but none is working (getting close to c# though). Can eanyone see what im doing wrong?

 using UnityEngine;
 using System.Collections;
 
 public class cowHit : MonoBehaviour {
     public GameObject otherObj;
     public GameObject resultObj;
     
     
 void OnTriggerEnter(Collider otherObj)
     {
     resultObj.animation.Play("hit");
     }
     
 }