Assets/Scripts/jumpTouch.js(16,35): BCE0020: An instance of type 'UnityEngine.Touch' is required to access non static member 'position'.

I’ve been searching for a few hours on this. Essentially I want to apply an up speed if the player touches the top half of the screen & a down speed if the player touches the bottom half.

This is as far as I’ve gotten & I’m getting the error above. Adding in:
var position: Vector2;
function Start () {
UnityEngine.Touch touch;
touch.position = position;
}

Just gives me an error code about a semi-colon missing. Any help woudl be appreciate it.

var jumpSpeed : float = .002;
var fallSpeed : float = -.004;
var position : Vector2;

function Start() {

}

function Update() {



	if (Input.GetTouch(0).phase) {
			if (Touch.position > (Screen.height/2)) {
				GetComponent.<Rigidbody2D>().velocity.y = jumpSpeed;
				} else {
					GetComponent.<Rigidbody2D>().velocity.y = fallSpeed;
					}
				}
			}

c# sorry :

    float jumpSpeed = 0.002f;
    float fallSpeed =  -0.004f;
    Rigidbody2D rgb;
    void Start()
    	{
    		//geting rididbody component only once not each time you touch the screen.
    		rgb = GetComponent<Rigidbody2D> ();
    	}
    	void Update()
    	{
    		if (Input.touchCount > 0 && Input.GetTouch(0).phase == TouchPhase.Began)//change the TouchPhase as you want.
    		{
    			if( Input.GetTouch(0).position.y > Screen.height/2)
    			{
    				rgb.velocity = new Vector2 (0,jumpSpeed); 
    			} 
    			else if(Input.GetTouch(0).position.y < Screen.height/2)
    			{
    				rgb.velocity = new Vector2 (0,fallSpeed); 
    			}
    			
    		}
    	
    	}

I did end up getting this to work. For future use:

#pragma strict

var jumpSpeed : float = .002;
var fallSpeed : float = -.004;
var position : Vector2;

function Start() {

}

function Update() {



	if (Input.touchCount>0) {
		var touch : Touch = Input.GetTouch(0);
		if(touch.position.y < Screen.height/2) {
			GetComponent.<Rigidbody2D>().velocity.y = jumpSpeed;
				} else {
					GetComponent.<Rigidbody2D>().velocity.y = fallSpeed;
					}
				}
			}