Question How to change mousePosition

Hi, while watching a video about interactables objects, they used the mousePosition to detect if an object is interactable or nor, but in my game the mouse is not visible and does not have an use. Does anybody know how to change it so it does not use the mousePosition?
This is the code:

Code (CSharp):

1. if(Input.GetButton("Horizontal"))
2.         {
3.             // We create a ray
4.             Ray ray = camRay.ScreenPointToRay(Input.mousePosition);
5.             RaycastHit hit;
6.  
7.             // If the ray hits
8.             if (Physics.Raycast(ray, out hit, 100))
9.             {
10.                 Interactable interactable = hit.collider.GetComponent<Interactable>();
11.                 if (interactable != null)
12.                 {
13.                     SetFocus(interactable);
14.                 }
15.             }
16.         }

 

Here is a related post: https://answers.unity.com/questions/330661/setting-the-mouse-position-to-specific-coordinates.html

Code (CSharp):

1. //C#
2. using System.Runtime.InteropServices;
3. [DllImport("user32.dll")]
4. static extern bool SetCursorPos(int X, int Y);
5. int xPos = 30, yPos = 1000;
6. SetCursorPos(xPos,yPos);//Call this when you want to set the mouse position

code example by zachwuzhere