The Child Is Not Hovered When Passing The Parent's Collider

I want to click a child using the MRTK toolkit. The Sphere Object is the child of the Cube Object. Both parent and child are interactable have and colliders.

Using the controller ray, I was able to hit the child, but the child is not hovered nor clicked. I used passing the parent collider with

hit.collider.transform

, changing camera event mask with

GameObject.Find("Main Camera").GetComponent().eventMask = layer_mask;

, and hitting sphere layer mask with

Physics.Raycast(startPoint, endPoint, out hit, layer_mask)

, but non helped to click the sphere :(. The code is as follow:

foreach (var source in MixedRealityToolkit.InputSystem.DetectedInputSources) {

          foreach (var p in source.Pointers)

          {

              // Sould be the controller ray

              if (p.Result != null && p.PointerName =="DefaultControllerPointer(Clone)")

              {

                  var startPoint = p.Position;

                  var endPoint = p.Result.Details.Point;

                  var hitObject = p.Result.Details.Object;

                  if (hitObject != null)

                  {

                      RaycastHit[] hits = Physics.RaycastAll(startPoint,endPoint, Mathf.Infinity);

                      for (int i = 0; i < hits.Length; i++)

                      {

                          RaycastHit hit = hits[i];

                          if (hit.collider.transform.name == "Sphere")

                          {

                              Debug.Log("this is printed");

                              int layer_mask =LayerMask.GetMask("Sphere");

                              GameObject.Find("Main Camera").GetComponent().eventMask= layer_mask;

                              if (Physics.Raycast(startPoint, endPoint, out hit, layer_mask))

                              {

                                  Debug.Log("this is printed as well");

                              }

                          }

                      }

                  }

              }

          }

When the controller is inside the cube and pass its collider, the sphere (child) is hovered as follow: ![hovered][1]

But when the ray is out of the cube, the sphere is not hoverred, although it is hit. the image is as followed: ![not hovered][2]

BTW. The sphere has the pointer handler.

What is the problem? [1]: https://i.stack.imgur.com/05eEn.jpg [2]: https://i.stack.imgur.com/PaamT.jpg