How can I update timer using a collision?

I have a empty game object called Clock with this script attached, I want to try and add time when I collid into another game object.

 var timer : float = 10.0; //Create varable Timer of type float
 
 function Update () 
 {
     timer -= Time.deltaTime;//Varable time decrements from set value (10.0)
     if(timer <= 0)//When timer = 0
         {
             timer = 0;
             Application.LoadLevel(6);//loads the game over scene
         }
 }
 
 function OnGUI ()
 {
      GameObject.Find("TimerText").GetComponent.<UI.Text>().text="Timer:" + timer.ToString("0");
 }

My Second script is on the game object I want to collid with once I hit this it should update the timer but I cant figure out where Im going wrong

 import UnityEngine.UI;
 
 
 
 function OnTriggerEnter (info:Collider)//when trigger enters 
 {
     var pickUpAudio : AudioSource = GetComponent.<AudioSource>();
     pickUpAudio.Play ();
     //Timer.timer +=10;/
     transform.position = Vector3(0,-1000,0);
     yield WaitForSeconds (1.5);
     Destroy (gameObject);/
 
 }