Hello all; I wrote these codes to move and object to another with constant velocity according to mouse click. But somethings wrong :S . Help me please :)

var GidecekObje : Transform;
var GidecegiNokta : GameObject;
function Update () 
{

    if (Input.GetMouseButtonDown(0))
    {
        GidecekObje.velocity = 5;
        GidecekObje.transform.position = GidecegiNokta.transform.position;  
    }
}

Thanks for attention...