Почему нельзя скрыть UI элементы в функции void OnTriggerEnter2D(Collider2D other)?

public class Movement : MonoBehaviour {

	public Vector2 movement;
	private Rigidbody2D rb;

	public GameObject text;

	private bool isMove = true;

	private void Start()
	{
		rb = GetComponent<Rigidbody2D>();
	}

	private void FixedUpdate()
	{
		if(isMove) rb.MovePosition((Vector2)transform.position + movement);
	}

	private void Update()
	{
	}

	private void OnTriggerEnter2D(Collider2D other)
	{
		if(other.tag == "Main")
		{
			isMove = false;
			transform.SetParent(other.transform);

		}
		if(other.tag == "GameOver")
		{
			Debug.Log("GameOver");
			text.SetActive(true);
			// text - пустой объект к которому привязан текст
			
		}
	}
}