Addforce to hinge Joint 2d on runtime

Hi, on my project i've two sprite on the stage, first one has hinge joint 2D enable and in runtime when i add a force it starts to make "pendulum" movement. On the second one i add the hinge joint 2d on runtime because it has to make a tween animation before, so on the callback of the animation i call a function that add the HJ2D and apply a force to make "pendulum" movement, here is the code:

 void myFunction() {
         HingeJoint2D myJoint = (HingeJoint2D)gameObject.AddComponent<HingeJoint2D>();
             Vector2 ancore = new Vector2(0f,3.25f);
             Vector2 connAncore = new Vector2(-1.97f,3.86f);
         myJoint.anchor = ancore;
         myJoint.connectedAnchor = connAncore;
         myObject.GetComponent<Rigidbody2D>().AddForce(transform.right * 200);
     }

from the ispector i see that the component is added and enabled, but the force will be never applyed.

i can't figure out why, please help me.

thanks so much