NavMeshAgent_pathStatus

Hello, Im quite desperate about this little script I wrote. (Problem is written in bold).
I have tried everything which i could think of. Actually, this is my first thread after 1,5 year
Anyway, I think its just an syntax error. Please help Lukas

(Error message:Operator '==' cannot be used with a left hand side of type 'UnityEngine.NavMeshPathStatus' and a right hand side of type 'System.Object'.)
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private var player : Transform;
private var nav : NavMeshAgent;


function Awake ()
{
player = GameObject.FindGameObjectWithTag ("Player").transform;
nav = GetComponent (NavMeshAgent);
nav.SetDestination (player.position);
}

function Update (){
if(nav.pathStatus==nav.NavMeshPathStatus.completed){
Debug.Log("Path_OK");
}
}