Why am I getting this error?

/Scripts/Soldier.cs(113,28): error CS1061: Type AI' does not contain a definition for suspition' and no extension method suspition' of type AI' could be found (are you missing a using directive or an assembly reference?) I am trying to make a script where if I enter the enemy trigger their suspition raises. In order to do this I have to access a variable from the AI script from my soldier script. Here are the scripts. /Scripts/Soldier.cs(113,28): error CS1061: Type AI' does not contain a definition for suspition' and no extension method suspition' of type AI' could be found (are you missing a using directive or an assembly reference?)

 My soldier script below.
  

 using UnityEngine;
 using System.Collections;
 
 public class Soldier : MonoBehaviour {
     private AI ai;
     public float suspitionSpeed;
     public float health;
     public float hitSpeed = 20.0f;
     public int score;
     public GUIText scoreText;
     public GUIText healthText;
     public GUIText dead;
     private bool canPickUpHealth;
     private bool isHit = false;
     private bool isShot = false;
     // Use this for initialization
     void Start () {
         SetHealthText();
         SetScoreText();
         dead.text = "";
         canPickUpHealth = false;
         score = 0;
         Time.timeScale = 1;
         ai = GetComponent<AI>();
     }
     
     // Update is called once per frame
     void Update () {
         if(health >= 100.0f)
         {
             health = 100.0f;
             SetHealthText();
         }
         if(health < 0.0f)
         {
             health = 0.0f;
             SetHealthText();
         }
         if(health <= 0.0f)
         {
             Time.timeScale = 0;
             dead.text = "YOU ARE DEAD";
             SetHealthText();
         }
         if(health == 100.0f)
         {
             canPickUpHealth = false;
         }
         else
         {
             canPickUpHealth = true;
         }
         if(isHit)
         {
             health -= Time.deltaTime * hitSpeed;
             health = Mathf.Round(health);
             SetHealthText();
         }
         else
         {
             isHit = false;
         }
 
         if(isShot)
         {
             hitSpeed = 25.0f;
             health -= Time.deltaTime * hitSpeed;
             health = Mathf.Round(health);
             SetHealthText();
         }
         else
         {
             isShot = false;
             hitSpeed = 20.0f;
         }
 
         if(Input.GetKeyDown (KeyCode.Space))
         {
             audio.Play();
         }
 
     }
 
     void OnTriggerEnter(Collider other)
     {
         if( other.gameObject.tag == "Health" && Input.GetKeyUp(KeyCode.E))
         {
               if(canPickUpHealth)
             {
               health = health + 15.0f;
               other.gameObject.SetActive(false);
               SetHealthText();
             }
         }
         if(other.gameObject.tag == "Enemy" && health > 0.0f)
         {
             isHit = true;
         }
         if(other.gameObject.tag == "Bullet" && health > 0.0f)
         {
             isShot = true;
             hitSpeed = 25.0f;
         }
 
         if(other.gameObject.tag == "PickUp")
         {
             other.gameObject.SetActive(false);
             score = score + 10;
             SetScoreText();
         }
         if(other.gameObject.tag == "Suspicion")
         {
             ai.suspition += Time.deltaTime * suspitionSpeed;
         }
     }
 
     void OnTriggerStay(Collider other)
     {
         //if(other.gameObject.tag == "Enemy")
         //{
         //    isHit = false;
         if( other.gameObject.tag == "Health" && Input.GetKeyUp(KeyCode.E))
         {
             if(canPickUpHealth)
             {
                 health = health + 15.0f;
                 other.gameObject.SetActive(false);
                 SetHealthText();
                 audio.Play();
             }
         }
     }
 
     void OnTriggerExit(Collider other)
     {
         if(other.gameObject.tag == "Enemy")
         {
             isHit = false;
         }
         if(other.gameObject.tag == "Bullet" && health > 0.0f)
         {
             isShot = false;
         }
     }
 
     void SetHealthText()
     {
         healthText.text = "Health: " + health.ToString();
         if(health <= 0.0f)
         {
             dead.text = "YOU ARE DEAD";
         }
     }
     void SetScoreText()
     {
         scoreText.text = "Score: " + score.ToString();
     }
     
 }

Here is my AI script below.

 using UnityEngine;
 using System.Collections;
 
 public class AI : MonoBehaviour {
 
     public float suspition;
     public int health = 100;
     public Transform target;
     public bool foundTarget = false;
     public int movespeed;
     public int rotateSpeed;
     private bool takeDamage = false;
     public Transform myTransform;
 
 
 
     // Use this for initialization
     void Start () {
         takeDamage = false;
         myTransform = transform;
         target = GameObject.FindWithTag("Player").transform;
         suspition = 0.0f;
     }
     
     // Update is called once per frame
     void Update () {
 
         if(takeDamage == true)
         {
             health -= 10;
         }
         if(health == 0)
         {
             gameObject.SetActive(false);
             takeDamage = false;
         }
           
         if(suspition == 100)
         {
             foundTarget = true;
         }
         else{
             foundTarget = false;
         }
         if(foundTarget && health > 0)
         {
             transform.LookAt(target);
             myTransform.Translate(Vector3.forward * movespeed * Time.deltaTime);
         }
 
 
     
     }
 
     void OnTriggerEnter(Collider other)
     {
         if(other.gameObject.tag == "Bullet")
         {
             takeDamage = true;
         }
 
         if(other.gameObject.tag == "Player")
         {
             foundTarget = true;
         }
     }
 
     void OnTriggerStay(Collider other)
     {
         if(other.gameObject.tag == "Bullet")
         {
             takeDamage = true;
         }
     }
 
     void OnTriggerExit(Collider other)
     {
         if(other.gameObject.tag == "Bullet")
         {
             takeDamage = false;
         }
     }
 }