State machine isn't calling the right states - c#

Unity Engine
1

Im using the states i used for a different game, according to that script it is suppose to work.
I made a button which could switch the states manually. But none of them are actually switching the states . tho the debug.log is called upon - the inspector doesnt show a state change

My goal:
I woud like the monster with this script attached to
Stay idle
Be alerted
Going in for attack

Currently the monster moves to the player, i wanted to change so he wouldnt move if the state is diferrent (thats why the elkse statemebnt says movespeed =0 but that doesnt seem to work either, it just sticks to the state.attack

using UnityEngine;
using System.Collections;

public class EnemyAI : MonoBehaviour
{
	public enum MonsterState			
	{
		unaware,
		alerted,
		attack
		
	} ;
	
	//______variabelen________________________
	
	public Transform target; 			
	public int moveSpeed;
	public int rotationSpeed;
	public AudioClip au_monsterAtt;

	public int maxDistance;
	public int minDistance;
	public MonsterState gameState;			
	 
		private Transform myTransform;
	private CharacterController controller;
	
	//_____awake______________________________
	
	void Awake ()
	{
		myTransform = transform;			

	}
	

	
	//_____start______________________________
	
	void Start ()
	{
		
		GameObject go = GameObject.FindGameObjectWithTag ("Player"); 
		gameState = MonsterState.attack;
		target = go.transform;			
		
		maxDistance = 10;
		minDistance = 5;				
		
		controller = GetComponent<CharacterController> ();
	}
	
		// _______onGUi___________________________
	
	void OnGUI ()
	{
		switch (gameState) 
		{
		
			case MonsterState.unaware:
			
				if (GUI.Button (new Rect (Screen.width - 300,Screen.height - 350, 100, 30), "unaware")) 
				{
					gameState = MonsterState.alerted;
						Debug.Log ("switch to alerted");
				}
			
			break;
			
			case MonsterState.alerted:
				if (GUI.Button (new Rect (Screen.width - 300,Screen.height - 350, 100, 30), "alerted")) 
				{
					gameState = MonsterState.attack;
						Debug.Log ("switch to attack");
				}
			break;
			
			case MonsterState.attack:		
				if (GUI.Button (new Rect (Screen.width - 300,Screen.height - 350, 100, 30), "attack")) 
				{
					gameState = MonsterState.unaware;
						Debug.Log ("switch to unaware");
				}
			break;
		}
	}
	
	//_____update_____________________________
	
	void Update ()
	{
		
		switch (gameState) {
		
		case MonsterState.unaware:			
			Unaware ();						
			break;
			
		case MonsterState.alerted:			
			Alerted ();						
			break;
			
		case MonsterState.attack:			
			Attack ();						
			break;
		}
	
	}	
	private void Unaware()
		{
		//idle	
		}
	
	private void Alerted()
		{
		
		}
	
	private void Attack ()
		{
		if (gameState == MonsterState.attack)	
			{
				// dit berekent de move tussen enemy en player  - bepalend op de mindistance
				if (Vector3.Distance (target.position, myTransform.position) < minDistance) 
				{
				Vector3 moveDirection = target.transform.position - transform.position;
				moveDirection.Normalize ();
				moveDirection.y = 0;											
				controller.Move (moveDirection * moveSpeed * Time.deltaTime);	
				transform.LookAt (transform.position + moveDirection); 		
				}	
			}
			else 
			{
			Debug.Log ("else statement");
			moveSpeed = 0;
			}
		
		}
		
	
	}
2

I took a quick look at the code.
The ‘moveSpeed=0’ command will never execute I think.
It is in the ‘else’ statement for ‘if (gameState == MonsterState.attack)’.
But the function ‘Attack’ is only ever called in your ‘Update()’ function, and only when ‘gameState’ is equal to ‘MonsterState.attack’.
Therefore the above else statement will never execute, as it will only be called when the state is MonsterState.attack.
Put the ‘moveSpeed = 0’ in your ‘Unaware()’ function maybe.