Why won't this script work?

I have a code that lerps a certain variable in a certain script. Here's the code...

Code (JavaScript):

1. var NormalY: float = 0; // XOffset while not aiming
2. var AimY: float = 0.2; // XOffset while aiming
3. private var cameraScript: MouseOrbitOTS;
4. function Start(){
5.      cameraScript = GetComponent(MouseOrbitOTS);
6.      var ch:Camera = GetComponent(Camera);
7. }
8. function Update(){
9.      var cameraY = NormalY;
10.      if (Input.GetButton("Aim")){
11.          cameraY = AimY;
12.       }
13.       cameraScript.yOffset = cameraY; // set XOffset while aiming or not aiming
14. }

And here's the script it functions with...

Code (JavaScript):

1. var target : Transform;
2. var distance = 10.0;
3.  
4. var xOffset = 0.0;
5. var yOffset = 0.0;
6. var xSpeed = 250.0;
7. var ySpeed = 120.0;
8. var yMinLimit = -20;
9. var yMaxLimit = 80;
10. var distanceMin = 3;
11. var distanceMax = 15;
12. private var x = 0.0;
13. private var y = 0.0;
14. @script AddComponentMenu("Camera-Control/Mouse Orbit")
15. function Start () {
16.     var angles = transform.eulerAngles;
17.     x = angles.y;
18.     y = angles.x;
19.     // Make the rigid body not change rotation
20.        if (rigidbody)
21.         rigidbody.freezeRotation = true;
22. }
23. function LateUpdate () {
24.     if (target) {
25.         x += Input.GetAxis("Mouse X") * xSpeed * distance* 0.02;
26.         y -= Input.GetAxis("Mouse Y") * ySpeed * 0.02;
27.          y = ClampAngle(y, yMinLimit, yMaxLimit);
28.         var rotation = Quaternion.Euler(y, x, 0);
29.         distance = Mathf.Clamp(distance - Input.GetAxis("Mouse ScrollWheel")*5, distanceMin, distanceMax);
30.         var hit : RaycastHit;
31.         if (Physics.Linecast (target.position, transform.position, hit)) {
32.                 distance -=  hit.distance;
33.         }
34.         var position = rotation * Vector3(xOffset, yOffset, -distance) + target.position;
35.         transform.rotation = rotation;
36.         transform.position = position;
37.     }
38. }
39. static function ClampAngle (angle : float, min : float, max : float) {
40.     if (angle < -360)
41.         angle += 360;
42.     if (angle > 360)
43.         angle -= 360;
44.     return Mathf.Clamp (angle, min, max);
45. }

It works fine, but I went to change it so it would function with another script, and I got an error. Here's the changed version of the first script...

Code (JavaScript):

1. var NormalY: float = 0; // XOffset while not aiming
2. var AimY: float = 0.2; // XOffset while aiming
3. private var cameraScript: GunSway;
4. function Start(){
5.      cameraScript = GetComponent(GunSway);
6.      var ch:Camera = GetComponent(Camera);
7. }
8. function Update(){
9.      var cameraY = NormalY;
10.      if (Input.GetButton("Fire2")){
11.          cameraY = AimY;
12.       }
13.       cameraScript.defaultPosition.y = cameraY; // set XOffset while aiming or not aiming
14. }

And here's the script I want it to work with...

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class GunSway: MonoBehaviour {
5.     public float moveAmount = 1f;
6.     public float moveSpeed = 2f;
7.     public GameObject gun;
8.     private float moveOnX;
9.     private float moveOnY;
10.     public Vector3 defaultPosition;
11.     public Vector3 newGunPosition;
12.    
13.    
14.     // Use this for initialization
15.     void Start () {
16.        
17.     }
18.    
19.     // Update is called once per frame
20.     void Update () {
21.        
22.         moveOnX = Input.GetAxis("Mouse X") * Time.deltaTime * moveAmount;
23.        
24.         moveOnY = Input.GetAxis("Mouse Y") * Time.deltaTime * moveAmount;
25.        
26.         newGunPosition = new Vector3 (defaultPosition.x+moveOnX, defaultPosition.y+moveOnY, defaultPosition.z);
27.        
28.         gun.transform.localPosition = Vector3.Lerp(gun.transform.localPosition, newGunPosition, moveSpeed*Time.deltaTime);
29.        
30.     }
31.    
32.    
33. }
34.  

I got this error when I changed the script...

Assets/AimLerpY.js(3,27): BCE0018: The name 'GunSway' does not denote a valid type ('not found').

Why do I get this if it worked fine with a different script?

 

Because GunSway is a c# and AimLeryY is a js, you need to make sure the c# compiles first
move it into a folder called 'plugins'
http://docs.unity3d.com/412/Documentation/ScriptReference/index.Script_compilation_28Advanced29.html

Or port the other to c#