// Change From GameOject
public GameObject GameObjectWithImage;
public Sprite ImageYouWant;
GameObjectWithImage.GetComponent<Image>().sprite = ImageYouWant
// Change From Image
public Image Image;
public Sprite ImageYouWant;
Image.sprite = ImageYouWant
Image[] images = PlayerBarExample.GetComponentsInChildren<Image>(); Image face = images[0]; foreach (Image image in images) { if (image.gameObject.CompareTag("face")) face = image; }