MissingFieldException: System.Single.speedOpen. Door script.

I dont know what i did. I dont know what this means. Please help me. The script is for a door. The script was javascript. Here is the script.

var door: Transform;
var angleOpen: int;
var angleClose: int;
var speedOpen: int = 1000;

function OnTriggerStay(other:Collider){
if (door.transform.localEulerAngles.y < angleOpen){

There are a few errors here including using .speedOpen as a property of Time.deltaTime which it is not; see doc/examples of Rotate

You will benefit more from a good tutorial on scripting than pounding your head against a wall