how to zoom where i have mouse cursor in unity code example

Example: how to zoom where i have mouse cursor in unity

public float zoomSpeed;     public float minZoom;     public float maxZoom;      void Update()     {         Zoom();     }      void Zoom()     {         Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);         RaycastHit point;         Physics.Raycast(ray, out point, 1000);         Vector3 Scrolldirection = ray.GetPoint(5);          float step = zoomSpeed * Time.deltaTime;          // Allows zooming in and out via the mouse wheel         if (Input.GetAxis("Mouse ScrollWheel") > 0 && Scrolldirection.y > minZoom)         {             transform.position = Vector3.MoveTowards(transform.position, Scrolldirection, Input.GetAxis("Mouse ScrollWheel") * step);         }         if (Input.GetAxis("Mouse ScrollWheel") < 0 && Scrolldirection.y < maxZoom)         {             transform.position = Vector3.MoveTowards(transform.position, Scrolldirection, Input.GetAxis("Mouse ScrollWheel") * step);         }     }