Destroy object on position X

Unity Engine
,
1

Hi

I want to destroy the object if it hits another object or it travel 8 to on the VectorX that it has been started
I have this as below but it does not work

var Speed : float;
var Position : float;

function Awake (){
Position = transform.position.x;
print(Position);
}
function Update () {

transform.Translate(Speed * Time.deltaTime,0,0);

if (Position == Position + 8 ) {
Destroy(gameObject);
}
}

function OnTriggerEnter (col : Collider ) {

Destroy(gameObject);

}

2

try changing this

if (Position >= Position + 8 ) {
Destroy(gameObject);
}