How to have attach and detach Fixed Joints on objects with UI button through Oculus?,How to break fixed joint in a command?

I created a UI Button with the purpose to turn objects into fixed joints whenever is pressed. I want a script where I can press A with the oculus controller over the UI Button and make the cubes join, and I want to press X with the oculus controller over the UI Button to break the joints of the objects. But this is not working for me so far, please any suggestions?

using System.Collections; using System.Collections.Generic; using UnityEngine; using UnityEngine.UI;

public class Attach : MonoBehaviour { public GameObject cube; public Text attachText;

 private FixedJoint joint;
 private float breakForce;
 
   
 void ClickUIButton()
 {

     if(attachText.enabled == true)    //OVRInput.GetDown(OVRInput.Button.One)
     {
         if(OVRInput.GetDown(OVRInput.Button.One))
         {
             join();
         }

         if(OVRInput.GetDown(OVRInput.Button.Three))
         {
             Destroy();
         }
     }
 }


 private void join()
 {
     gameObject.AddComponent<FixedJoint>();
     gameObject.GetComponent<FixedJoint>().connectedBody = cube.GetComponent<Rigidbody>();
     //joint = GetComponent<FixedJoint>();
 }


 private void Destroy()
 {
     if (gameObject.GetComponent<FixedJoint>().breakForce == Mathf.Infinity)
     {
         Destroy(gameObject.GetComponent<FixedJoint>());
     }
 }

} ,I created a UI button, and when I press A on the oculus controller over the UI button I want to make the cubes have a fixed joint without detaching, and when I press X on the controller over the UI button I want the objects to break joints.

using System.Collections; using System.Collections.Generic; using UnityEngine; using UnityEngine.UI;

public class Attach : MonoBehaviour { public GameObject cube; public Text attachText;

 private FixedJoint joint;
 private float breakForce;
 
   
 void ClickUIButton()
 {

     if(attachText.enabled == true)    //OVRInput.GetDown(OVRInput.Button.One)
     {
         if(OVRInput.GetDown(OVRInput.Button.One))
         {
             join();
         }

         if(OVRInput.GetDown(OVRInput.Button.Three))
         {
             Destroy();
         }
     }
 }


 private void join()
 {
     gameObject.AddComponent<FixedJoint>();
     gameObject.GetComponent<FixedJoint>().connectedBody = cube.GetComponent<Rigidbody>();
     //joint = GetComponent<FixedJoint>();
 }


 private void Destroy()
 {
     if (gameObject.GetComponent<FixedJoint>().breakForce == Mathf.Infinity)
     {
         Destroy(gameObject.GetComponent<FixedJoint>());
     }
 }

}