How can I Raycast to multiple objects

I am trying to create a waypoint system, where at the start of the level each waypoint finds all the waypoints that it can "see." I want each waypoint to Raycast to all the other waypoints and store the waypoints that the Raycast can hit in an array. I get the error: No appropriate version of 'UnityEngine.Physics.RaycastAll' for the argument list '(UnityEngine.Vector3, UnityEngine.Vector3, UnityEngine.RaycastHit)' was found.Here's the code:

 var wayPoints : GameObject[];
 var nextPoints : GameObject[];
 var myPoint = transform.position;
 function Start() {
     
     wayPoints = GameObject.FindGameObjectsWithTag("Waypoint");
     var hits : RaycastHit[]; 
     var rayDirections : Vector3[] = (wayPoint.position - transform.position).normalized;
     
     for (var i = 0; i < hits.length; i++) {
         if (Physics.RaycastAll(myPoint, rayDirections[i], hits[i])) {        
             if ( hits.collider.gameObject.tag == "Waypoint" ) {
             nextPoints = hits.collider.gameObject;
             }
         }
     }
 }