Question two bone ik constraint not working

Hello, i have a gun with ik target that is attached to the two bone ik constraint target at run time by this script:

Code (CSharp):

1.  public TwoBoneIKConstraint rightHand;
2.     public GameObject makarov;
3.     // Start is called before the first frame update
4.     void Start()
5.     {
6.         if(!IsOwner) { return; }
7.     }
8.  
9.     // Update is called once per frame
10.     void Update()
11.     {
12.         if (!IsOwner) { return; }
13.  
14.         if (makarov.activeSelf)
15.         {
16.             Debug.Log("tttt");
17.             rightHand.data.target = makarov.transform.Find("RIghtHandIK");
18.  
19.         }
20.     }

but the arm doesnt follow the target:

(vid starts at 0:23 seconds)

 

SOLVED:
add:

Code (CSharp):

1. RigBuilder.Build();

after changing the IK target in script