How to make an object move relative to the finger

I have a IOS game kinda like asteroids and I want the object to move up and down when the finger moves up and down Can someone make it this line make the object move up and down then the finger is moved up and down? transform.Translate(Input.GetAxisRaw(“Vertical”)Time.deltaTimebananaSpeed);

Full Code:

#pragma strict
var bananaSpeed:float = 0;
var laser : GameObject;
var lastShot: float;
var FireRate: float;
function Start ()
{

}

function Update () 
{
    for (var touch : Touch in Input.touches)
    {   
        if(touch.phase == TouchPhase.Began)
        {
            Fire();
        }
    }
transform.Translate(Input.GetAxisRaw("Vertical")*Time.deltaTime*bananaSpeed);
transform.position.x=Mathf.Clamp(transform.position.x,-1,1);
transform.position.z=Mathf.Clamp(transform.position.z,-1.89,1.94);
}

function Fire()

{
    lastShot = Time.time;
    Instantiate(laser, transform.position, Quaternion.Euler(0,0,-90));
}

If you want a touch anywhere on the screen, you can do something like this (untested):

if (Input.touchCount == 1) {
    var touch : Touch = Input.GetTouch(0);
    if (touch.phase == TouchPhase.Moved) {
        transform.Translate(0.0f, touch.deltaPosition.y / Screen.height * factor, 0.0f);
    }
}

‘factor’ will be a variable or constant you define that determines world movement based on finger movement. Start with the value 10. The division by Screen.height will help this code be consistent across devices of different resolutions.