UI script Not working. Please review

Kp_TimerText is not showing the Timer Value...
Kp_GuageImage is not charing its fill amount to represent timer.
Kp_KeyPad is being Disabled on code failure where I need just its Keys (buttons) to be disabled.

I cant seem to get these things working, Every thing else works as it should. With the exception of the timer as I am not sure if it is actually functioning at all.

See Script Notations for more info.. Any suggestions or examples would be appreciated..
Basically its a script that controls a Code Entry KeyPad.

Code (CSharp):

1.  
2. using UnityEngine;
3. using UnityEngine.UI;
4. using System.Collections;
5.  
6. public class UI_Control : MonoBehaviour
7. {
8.     public GameObject Kp_SecurityCenter;
9.     public Canvas Kp_KeyPad;
10.     public Text Kp_CodeText;
11.     public Text Kp_TimerText;
12.     public Image Kp_TimerGauge;
13.  
14.     public string Kp_DefualtText = "CODE ?";
15.     public Color Kp_DefualtColor = new Vector4(0.0F, 255, 0.0F, 1);
16.     public Color Kp_AlarmColor = new Vector4(255F, 0.0F, 0.0F, 1);
17.  
18.     public bool IsActive = true;
19.     public bool IsSelected = true;
20.     public bool IsPlayerIn = true;
21.     public bool IsHackable = true;
22.     public bool IsLocked = true;
23.     public bool IsLockable = true;
24.     public bool IsReLock = false;
25.     public string uPassCode = "123";
26.     public string lPassCode= "321";
27.  
28.     public bool IsTimed = true;
29.     public float Kp_timer = 10.0f;
30.  
31.     public AudioClip S_Button;
32.     public AudioClip Su_lock;
33.     public AudioClip S_Lock;
34.     public AudioClip Se_Lock;
35.     public AudioClip Alarm;
36.  
37.     public Texture2D MyCursor;
38.     public Vector2 MyhotSpot = Vector2.zero;
39.     public CursorMode MycursorMode = CursorMode.Auto;
40.  
41.     private float a;
42.  
43.     private string MyCode;
44.     public int Kp_ErrorCount = 0;
45.  
46.  
47.     void Start()
48.     {
49.         Kp_CodeText.color = Kp_DefualtColor;
50.         Kp_TimerText.color = Kp_DefualtColor;
51.         Cursor.SetCursor(MyCursor, MyhotSpot, MycursorMode);
52.     }
53.  
54.  
55.     void UpDate()
56.     {
57.         /*    Was trying this to see if anything would happen, and nothing...
58.         a = a + 0.01f;
59.         Kp_TimerGauge.fillAmount = a;
60.         */
61.  
62.         if (IsTimed && IsActive && IsLocked)
63.         {
64.             Kp_timer -= Time.deltaTime;
65.  
66.             if (Kp_timer < 0)
67.             {
68.                 Kp_timer = 0;
69.             }
70.  
71.             float seconds = Kp_timer % 60;
72.             float minutes = Kp_timer / 60;
73.  
74.             // Kp_TimerText is not showing time.
75.             Kp_TimerText.text = minutes + ":" + seconds;
76.  
77.             // Code to change Kp-GuageImage fill amount here...
78.  
79.         }
80.     }
81.  
82.  
83.     public void MyKeyCode (string MyCode)
84.     {
85.         if (Kp_CodeText.text == "CODE ?")
86.         {
87.             Kp_CodeText.text = "";
88.         } else {
89.         if(Kp_CodeText.text == "ERROR!")
90.             {
91.                 Kp_CodeText.text = "";
92.             }
93.         }
94.         Kp_CodeText.text = Kp_CodeText.text += MyCode;
95.         print ("Key");
96.     }
97.  
98.  
99.     public void Kp_Check()
100.     {
101.         if (Kp_CodeText.text == uPassCode)
102.         {
103.             Kp_CodeText.text = "UNLOCKED";
104.             IsLocked=false;
105.             AudioSource.PlayClipAtPoint (Su_lock, (new Vector3 (0, 0, 0)));
106.         } else
107.             {
108.             if (Kp_CodeText.text == lPassCode)
109.             {
110.                 Kp_CodeText.text = "LOCKED";
111.                 IsLocked=true;
112.                 AudioSource.PlayClipAtPoint (S_Lock, (new Vector3 (0, 0, 0)));
113.             }else{
114.  
115.                 Kp_CodeText.color=Kp_AlarmColor;
116.                 Kp_CodeText.text = "ERROR!";
117.                 AudioSource.PlayClipAtPoint (Alarm, (new Vector3 (0, 0, 0)));
118.  
119.                 // Disables panel and not buttons on it.
120.                 Kp_KeyPad.enabled = false;
121.  
122.                 StartCoroutine("ResTime");
123.             }
124.         }
125.     }
126.  
127.  
128.     public void Kp_Clear()
129.     {
130.         print ("Cancel");
131.         Kp_CodeText.text = Kp_DefualtText;
132.         Kp_CodeText.color = Kp_DefualtColor;
133.     }
134.  
135.  
136.     public void Kp_Exit()
137.     {
138.         print ("Exit");
139.     }
140.  
141.     IEnumerator ResTime()
142.     {
143.         yield return new WaitForSeconds(2);
144.  
145.         if(IsReLock)
146.         {
147.             IsLocked=true;
148.         }
149.         Kp_ErrorCount = Kp_ErrorCount + 1;
150.         Kp_CodeText.color = Kp_DefualtColor;
151.         Kp_CodeText.text = Kp_DefualtText;
152.  
153.         Kp_KeyPad.enabled = true;
154.     }
155. }
156.  

 

(SOLVED)
Had to change UpDate to Update... Duh!

View here
http://forum.unity3d.com/threads/contribute-door-and-keypad-test-new-ui.317188/