GUI.Label, text plus user variables

EDIT:

Updated the code in the question which now contains the answer

I want to determine the number of fingers a user has on screen using GUI.Label, my code below:

 using UnityEngine;
 using System.Collections;
 
 public class fingerCount : MonoBehaviour {

     int fingerCounter = 0;

     // Use this for initialization
     void Start () 
     {
     
     }
     
     // Update is called once per frame
     void Update () 
     {
         
         foreach (Touch touch in Input.touches) 
         {
             if(touch.phase != TouchPhase.Ended && touch.phase != TouchPhase.Canceled)
             {
                 fingerCounter++;
             }
         }
 
     }
 
     void OnGUI()
     {
         if (fingerCounter > 0) 
         {
             GUI.Label (new Rect (0, 0, Screen.width, Screen.height), "User has " + fingerCounter.ToString() + " finger(s) touching the screen");
         }
     }
 
     
 }

The if statement in the OnGUI() function is incorrect but is there a way so that i can make it correct so that the label will update on screen with each finger I add?

Cheers in advance