Error CS1061...does not contain a definition for...and no extension method

Unity whene i press "play" error

 Assets/Scripts/EnemyAttack.cs(43,20): error CS1061: Type `PlayerHealth' does not contain a definition for `AddjustCurrentHealth' and no extension method `AddjustCurrentHealth' of type `PlayerHealth' could be found (are you missing a using directive or an assembly reference?)

Line error whene i click 2x on error

 eh.AddjustCurrentHealth(-10);

EnemyAttack.cs

public class EnemyAttack : MonoBehaviour { MonoBehaviour is white

public GameObject target; GameObject is white.. should be green

 using UnityEngine;
 using System.Collections;
 
 public class EnemyAttack : MonoBehaviour {
     public GameObject target;
     public float attackTimer;
     public float coolDown;
 
     // Use this for initialization
     void Start () {
         attackTimer = 0;
         coolDown = 2.0f;
     }
 
     // Update is called once per frame
     void Update() {
         if (attackTimer > 0)
             attackTimer -= Time.deltaTime;
 
         if (attackTimer < 0)
             attackTimer = 0;
 
         if (attackTimer == 0)  {
             Attack();
             attackTimer = coolDown;
             }
 
     }
     private void Attack() {
         float distance = Vector3.Distance(target.transform.position, transform.position);
 
         Vector3 dir = (target.transform.position - transform.position).normalized;
 
         float direction = Vector3.Dot(dir, transform.forward);
 
         Debug.Log(direction);
 
         if (distance < 2.5f)
         {
             if (direction > 0)
             {
                 PlayerHealth eh = (PlayerHealth)target.GetComponent("PlayerHealth");
                 eh.AddjustCurrentHealth(-10);
             }
         }
     }
 }