Physics2D.Raycast "Vector3 to Vector2 conversion" [Solved]

Hi guys, I am casting a 3D ray from the screen to the touch position. Unfortunately my game objects are sprites with 2D Colliders and a 3D ray is not colliding with them. Then I though I would cast a 2D ray to see what happens.

Here is the code:

 Ray ray = Camera.main.ScreenPointToRay(touch.position);
 RaycastHit2D hit = Physics2D.Raycast(ray.origin, ray.direction, rayLength);
 
 if (hit)
 {
     // Do some stuff
 }

The signature of the Raycast method is as follows Physics2D.Raycast(Vector2 origin, Vector2 direction, float distance). I don't understand why the code is compiling and the effect is the same as casting a 3D ray, because I am passing 3D vectors to the method, but the method takes 2D vectors as parameters?