Click to Move script problem

Hello guys i need your help. I have just started scripting in c# and whole unity engine is new for me. Can someone help me with my click to move script? I followed this tutorial https://www.youtube.com/watch?v=EAiV7gZv69M&feature=youtu.be but my "character" doesnt move towards location. Hers is code : using UnityEngine; using System.Collections;

 public class movement2 : MonoBehaviour {
     public float speed;
     public CharacterController controller;
     private Vector3 position;
     
     // Use this for initialization
     void Start () {
     }
     
     // Update is called once per frame
     void Update () {
         if (Input.GetMouseButton (0)) 
         {
             locatePosition();
         }
         
         moveToPosition();
         
     }
     
     void locatePosition()
     {
         RaycastHit hit;
         Ray ray = Camera.main.ScreenPointToRay (Input.mousePosition);
         
         if (Physics.Raycast (ray, out hit, 1000)) 
         {
             position = new Vector3(hit.point.x, hit.point.y, hit.point.z);
             Debug.Log(position);
             
             
         }
         
     }
     
     void moveToPosition(){
 
             
             Quaternion newRotation = Quaternion.LookRotation(position-transform.position, Vector3.forward);
             
             newRotation.x = 0f;
             newRotation.z = 0f;
             
             transform.rotation = Quaternion.Slerp(transform.rotation, newRotation, Time.deltaTime * 10);
             controller.SimpleMove(transform.forward * speed);
 
     }
 }

Thank you for all help.