problem with health pick up its going above the max health

 using UnityEngine;
 using UnityEngine.UI;
 using System.Collections;
 
 public class CharacterStats : MonoBehaviour
 {
 
     private CharacterController characterController { get { return GetComponent<CharacterController>(); } set { characterController = value; } }
     private RagdollManager ragdollManager { get { return GetComponentInChildren<RagdollManager>(); } set { ragdollManager = value; } }
     public PlayerUI UI { get { return GetComponent<PlayerUI>(); } set { UI = value; } }
 
     private CharacterStats stats;
     private Weapon wp { get { return GetComponent<Weapon>(); } set { wp = value; } }
 
     private GameController gc{get{return GetComponent<GameController>();} set {gc = value;}}
 
     [Range(0, 100)]
     public int CurrentHealth = 100;
 
     public int Highheal = 100;
 
     public int Midheal = 50;
 
     public int Lowheal = 25;
 
     public int MaxHealth = 100;
 
     public int faction;
 
     public MonoBehaviour[] scriptsToDisable;
 
     public Image damageImage;
 
     public Image healImage;
 
     public float healFlashSpeed = 10f;
 
     public Color healFlashColor = new Color(1f, 0f, 0f, 1f);
 
     public float flashSpeed = 5f;
 
     public Color flashColor = new Color(1f, 0f, 0f, 0.5f);
 
     bool damage;
 
     bool heal;
 
     public Color LowHealth = Color.red;
 
     public Color FullHealth = Color.green;
 
     void Start()
     {
         CurrentHealth = Mathf.Clamp(CurrentHealth, 0, 100);       
     }
 
     void Update()
     {
         if (gameObject.tag == "Player")
         {
             if (heal)
             {
                 healImage.color = healFlashColor;
             }
 
             else
             {
                 healImage.color = Color.Lerp(healImage.color, Color.clear, healFlashSpeed * Time.deltaTime);
             }
 
             heal = false;
         }
 
         if (gameObject.tag == "Player")
         {
             if (damage)
             {
                 damageImage.color = flashColor;
             }
             else
             {
                 damageImage.color = Color.Lerp(damageImage.color, Color.clear, flashSpeed * Time.deltaTime);
             }
             damage = false;
         }
     } 
 
     public void Damage(int amount)
     {
         damage = true;
 
         CurrentHealth -= amount;
 
         if (CurrentHealth <= 0)
         {
             Die();
         }
     }
     public void Die()
     {
         characterController.enabled = false;
 
         if (scriptsToDisable.Length == 0)
         {
             return;
         }
         foreach (MonoBehaviour script in scriptsToDisable)
             script.enabled = false;
         if (ragdollManager != null)
             ragdollManager.RagDoll();
         if(gameObject.CompareTag("Enemy"))
         {
             Destroy(gameObject, Random.Range(4f, 5f));
         }
 
         if(gameObject.tag == "Player")
         {
             if(CurrentHealth <=0)
             {
                 gc.LastCheckPointPos = transform.position;
             }
         }
     }
 
     public void HighHeal()
     {
         if(gameObject.tag == "Player")
         {
             if (CurrentHealth > 100)
                 return;
 
             if(CurrentHealth < 100)
             {
                 CurrentHealth += Highheal;
                 heal = true;
             }
         }
     }
 
     public void MidHeal()
     {
         if(gameObject.tag == "Player")
         {
             if(CurrentHealth > 100)
             return;
 
             if(CurrentHealth < 100)
             {
                 CurrentHealth += Midheal;
                 heal = true;
             }
         }
     }
 
     public void LowHeal()
     {
         if(gameObject.tag == "Player")
         {
             if(CurrentHealth > 100)
             return;
 
             if(CurrentHealth < 100)
             {
                 CurrentHealth += Lowheal;
                 heal = true;
             }
         }
     }
 }