Problem with component

Component ConfigurableJoint. AngularXMotion, it costs Locked, I can’t understand why it does not want to install on Free?

Code (CSharp):

1.  
2. using System.Collections;
3. using System.Collections.Generic;
4. using UnityEngine;
5. using UnityEngine.UI;
6. using UnityEngine.EventSystems;
7. public  class mehanic : MonoBehaviour
8. {
9.    
10.     public ConfigurableJoint confdet5;
11.        void Start()
12.     {
13.        
14.         confdet5 = gameObject.GetComponent<ConfigurableJoint>();
15.     }
16.    
17.       void Update()
18.     {
19.         confdet5.angularYMotion = ConfigurableJointMotion.Free;
20.     }
21. }

 

I don't understand a word of your question, but you seem to enquire about AngularXMotion, while your code references AngularYMotion.