Whenever I instantiate the Prefab, it doesn't spawn at the position of the sphere but at (0,0,0). why is this? in my script I used "...GameObject.Find("Spawner").transform.position..."

function CreatePlane()
{
    switch(random)
    {
        case 5:
            Instantiate( planePrefab, GameObject.Find("Spawner5").transform.position, Quaternion.identity);
        break;
        case 4:
            Instantiate( planePrefab, GameObject.Find("Spawner4").transform.position, Quaternion.identity);
        break;
        case 3:
            Instantiate( planePrefab, GameObject.Find("Spawner3").transform.position, Quaternion.identity);
        break;
        case 2:
            Instantiate( planePrefab, GameObject.Find("Spawner2").transform.position, Quaternion.identity);
        break;
        case 1:
            Instantiate( planePrefab, GameObject.Find("Spawner1").transform.position, Quaternion.identity);
        break;
    }
}