i want to display damage texture every time player gets hurt by enemy.

#pragma strict
import UnityEngine.UI;
var startingHealth : int = 100;
var currentHealth : int;
var healthSlider : Slider;
var damageImage : Image;
var deathClip : AudioClip;
var flashSpeed : float= 5f;
var flashColour : Color = new Color(1f, 0f, 0f, 0.1f);
private var isDead : boolean;
private var damaged : boolean;

private var chMotor : CharacterMotor;

private var foot : footstepbyjeevan;

var DeathClip: AudioClip;
var HurtClip : AudioClip;

var damageTexture : Texture;
var HurtTexture : Texture;
var cleanTexture :Texture;

function Awake ()
{

chMotor=GetComponent(CharacterMotor);
foot=GetComponent(footstepbyjeevan);
currentHealth = startingHealth;

}

function Update ()
{

if(damaged)
{
damageImage.color = flashColour;
damaged=true;

}

 if(damaged==true)
{
	
	     damageImage.color = Color.Lerp (damageImage.color, Color.clear, flashSpeed * Time.deltaTime);
}

   damaged = false;

}

public function TakeDamage (amount : int)
{
damaged = true;

  currentHealth -= amount;

  healthSlider.value = currentHealth;

GetComponent.<AudioSource>().clip =HurtClip[Random.Range(0,HurtClip.Length)];

  GetComponent.<AudioSource>().Play();


   if(currentHealth <= 0 && !isDead)
{
   
    Death ();
}

}

function Death ()
{

isDead = true;

GetComponent.().Play(“Death”, PlayMode.StopAll);

chMotor.enabled=false;

foot.enabled = false;

   GetComponent.<AudioSource>().clip =DeathClip[Random.Range(0,DeathClip.Length)];

  GetComponent.<AudioSource>().Play();

}

 function OnGUI () 
 {
	
 if(damaged)
 {

GUI.color = Color(1.0, 1.0, 1.0); //Color (r,g,b,a)

GUI.DrawTexture(new Rect(0,0,Screen.width, Screen.height), HurtTexture);	

}

else
{
damaged=false;
GUI.color = Color(1.0, 1.0, 1.0); //Color (r,g,b,a)

       GUI.DrawTexture(new Rect(0,0,Screen.width, Screen.height),cleanTexture );

}

if(currentHealth <= 0)
{
GUI.color = Color(1.0, 1.0, 1.0); //Color (r,g,b,a)

GUI.DrawTexture(new Rect(0,0,Screen.width, Screen.height),damageTexture );

}
}

Isnt there any one who can help me