Hinge joint is not moving

Im making a game which you can swing. So for that im using the hinge joints and for connect the next point which is on my way, i have a that function.

     public void FindRelativePosForHingeJoint(Vector3 blockPosition)
 {
     //Update the block position on this line in a proper way to Find Relative position for our blockPosition
     hJoint.anchor = blockPosition-transform.position;
     hJoint.autoConfigureConnectedAnchor = true;
     hJoint.useMotor = true;
     lRenderer.SetPosition(1, hJoint.anchor);
     lRenderer.enabled = true;
 }

But my function can't set the anchor position when i do this. But if i change it with

         public void FindRelativePosForHingeJoint(Vector3 blockPosition)
     {
         //Update the block position on this line in a proper way to Find Relative position for our blockPosition
         hJoint.axis = Vector3.forward;
         hJoint.anchor = blockPosition-transform.position;
         hJoint.autoConfigureConnectedAnchor = true;
         hJoint.useMotor = true;
         lRenderer.SetPosition(1, hJoint.anchor);
         lRenderer.enabled = true;
     }

the function can change the anchor point correctly. But for that time i can't move at all. I tried with hJoint.axis = Vector3.right(cause my object is moving in z) but for that time i couldn't change the anchor correctly too. How can i move my object with joint axis = Vector3.forward?