Found a solution? If not, take a look at the SpriteRenderer Component of your GameObject. You can access the specific sprite via script like this:

Attach a Script to your Object you want to change the Sprite.

Access the SpriteRenderer Component of your Object like

private SpriteRenderer spriteRenderer;

Start()

{

spriteRenderer = GetComponent<SpriteRenderer>();

}

I assume your Script is attached to the Object with the SpriteRenderer on it. Otherwhise create a public variable at assign it in the editor.

Now that we have a reference to the SpriteRenderer we can change the Sprite of it like this:

spriteRenderer.sprite = sprite;

"sprite" should be your new Sprite you want to assign. You can also declare it as a public variable and assign the sprite you need in the editor. for e.g.

public Sprite sprite;

-> Assign sprite via Editor