im having some issues with some cubes in

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// create cube
GameObject cube = GameObject.CreatePrimitive(PrimitiveType.Cube);
cube.transform.localScale = new Vector3(0.5f, 0.5f, 0.5f);
cube.transform.position = hit.point; // raycast hit point
cube.AddComponent<Rigidbody>();
cube.name = "0.5";