Display Variable with UI Text

I created a new UI>Text object and named it 'Player1Stamina'. This text is supposed to constantly display the value of the variable 'stamina' found in the script 'player1Movement'.

The problem is I cannot get the text displayed during Play to say anything other than the line of placeholder text I put in the text field on the 'Player1Stamina' which is currently 'Player 1 Stamina'.

 using UnityEngine;
 using System.Collections;
 using UnityEngine.UI;
 
 public class player1Movement : MonoBehaviour {
 
     public Text Player1Stamina;
     private int stamina;
     int maxStamina;
     int staminaRecharge;
     bool staminaRecharging;
     bool canMove;
 
     void Start () 
     {
         maxStamina = 100;
         stamina = 100;
         SetStaminaText ();
         staminaRecharge = 2;
         staminaRecharging = true;
         canMove = true;
     }
 
     void Update () 
     {
         if (staminaRecharging = true && stamina < maxStamina) 
         {
             stamina += staminaRecharge;
             SetStaminaText ();
         }
         if (Input.GetKey ("space")) 
         {
             stamina -= (staminaRecharge * 5);
             SetStaminaText ();
         }
             if (Input.GetKey ("z"))
             {
                     stamina += (staminaRecharge);
             SetStaminaText ();
             }
     }
     void SetStaminaText ()
     {
         Player1Stamina.text = "Stamina: ";
     }    
 }