i have a eror on a script Assets/RayCastChop.js(23,71): BCE0120: 'PlayerControl.canSwing' is inaccessible due to its protection level. what can i do? this is the script

pragma strict

var rayLength : int = 10;

//private var treeScript : taiere; private var playerAnim : PlayerControl;

var tree : GameObject;

function Update() { var hit : RaycastHit; var fwd = transform.TransformDirection(Vector3.forward);

 if(Physics.Raycast(transform.position, fwd, hit, rayLength))
 {
     if(hit.collider.gameObject.tag == "Tree")
     {
         //treeScript = GameObject.Find(hit.collider.gameObject.name).GetComponent(taiere);
         tree = (hit.collider.gameObject);
         playerAnim = GameObject.Find("FPSArms_Axe@Idle").GetComponent(PlayerControl);
         
         if(Input.GetButtonDown("Fire1") && playerAnim.canSwing == true)-----this is the lane doesn't work
         {
             //treeScript.treeHealth -= 1;
             tree.GetComponent(taiere).treeHealth -= 1;
         }
     }
 }

}