Unity Standard asset Cross Platform Input Manager and mouse input

I am using the Unity Cross Platform Input manager and the Single Stick Control joystick. How do I test the Joystick from the Editor and using my mouse to move the joystick.

If I enable the mobile Input, I can see the joystick and my mouse will move the joystick, yet the script does not move the game object.

If I disable the mobile Input, I no longer can see the joystick, yet my mouse clicks and movements move my game object.

My code looks like this.

 void Update()
     {
         // pass the input to the car!
         float h = CrossPlatformInputManager.GetAxis("Horizontal");
         float v = CrossPlatformInputManager.GetAxis("Vertical");
 
         touchHeading = new Vector2(h, v);
 
 #if !MOBILE_INPUT
         //When the Mouse first is pressed DOWN, set the start point
         if (Input.GetMouseButtonDown(0))
         {
             //get the screen coordinates of the touch
             touchPtScreen = CrossPlatformInputManager.mousePosition;
             
             //save the starting touch point in SCREEN SPACE
             startTouchPt = touchPtScreen;
         }
 
         if (Input.GetMouseButton(0) && CrossPlatformInputManager.mousePosition != startTouchPt)
         {
             print("Mouse MOVED = " + CrossPlatformInputManager.mousePosition);
             if (Vector2.Distance(CrossPlatformInputManager.mousePosition, startTouchPt) > touchSensitivity)
             {
                 touchHeading = CrossPlatformInputManager.mousePosition - startTouchPt;
                 lastHeading = touchHeading;
             }
         }            
         
 #endif
 
        //MOBILE DPAD control
 #if MOBILE_INPUT
         if (Input.touchCount > 0)
         {
             if (Input.GetTouch(0).phase == TouchPhase.Began || Input.GetTouch(0).phase == TouchPhase.Moved)
             {
                 if (Input.GetTouch(0).deltaPosition.magnitude > touchSensitivity)
                 { 
                     lastHeading = touchHeading;
                 }        
 
             }
         }
 #endif
 
 //this will move the car in the heading of the DPAD heading and will continue to move in that direction
         my2DLookAt(lastHeading);
         my2DMoveTowards(lastHeading);