NullReferenceException: Object reference not set to an instance of an object (when doing js to add value to c#)

here is the js:

 private var mn;
 private var CsharpScript;
 var oscChannel:int;
 
 
 function start() {
    mn = GetComponent("MegaNoise");
 }
 
 function Update () {
     var n = OSCReceiver.messages[oscChannel];
     transform.localScale = Vector3(n+0.3,n+0.3,n+0.3);
      mn.Freq = n+1;
     //Debug.Log(mn.Freq);
 }

i just need to add the value from osc input to the cSharp logic i have here :

 using UnityEngine;
 
 [AddComponentMenu("Modifiers/Noise")]
 public class MegaNoise : MegaModifier
 {
     public float    Scale        = 1.0f;
     public bool        Fractal        = false;
     public float    Freq        = 0.25f;
     public float    Iterations    = 6.0f;
     public bool        Animate        = false;
     public float    Phase        = 0.0f;
     public float    Rough        = 0.0f;
     public Vector3    Strength    = new Vector3(0.0f, 0.0f, 0.0f);
     MegaPerlin        iperlin        = MegaPerlin.Instance;
     float            time        = 0.0f;
     float            scale;
     float            rt;
 
     Vector3 sp = Vector3.zero;
     Vector3 d = Vector3.zero;
 
     public override string ModName() { return "Noise"; }
     public override string GetHelpURL() { return "?page_id=262"; }
 
     public override void Modify(MegaModifiers mc)
     {
         for ( int i = 0; i < verts.Length; i++ )
         {
             Vector3 p = tm.MultiplyPoint3x4(verts[i]);
 
             sp.x = p.x * scale + 0.5f;
             sp.y = p.y * scale + 0.5f;
             sp.z = p.z * scale + 0.5f;
 
             if ( Fractal )
             {
                 d.x = iperlin.fBm1(sp.y, sp.z, time, rt, 2.0f, Iterations);
                 d.y = iperlin.fBm1(sp.x, sp.z, time, rt, 2.0f, Iterations);
                 d.z = iperlin.fBm1(sp.x, sp.y, time, rt, 2.0f, Iterations);
             }
             else
             {
                 d.x = iperlin.Noise(sp.y, sp.z, time);
                 d.y = iperlin.Noise(sp.x, sp.z, time);
                 d.z = iperlin.Noise(sp.x, sp.y, time);
             }
 
             p.x += d.x * Strength.x;
             p.y += d.y * Strength.y;
             p.z += d.z * Strength.z;
 
             sverts[i] = invtm.MultiplyPoint3x4(p);
         }
     }
 
     public override void ModStart(MegaModifiers mc)
     {
     }
 
     public override Vector3 Map(int i, Vector3 p)
     {
         p = tm.MultiplyPoint3x4(p);
 
         float spx = p.x * scale + 0.5f;
         float spy = p.y * scale + 0.5f;
         float spz = p.z * scale + 0.5f;
 
         float dx,dy,dz;
 
         if ( Fractal )
         {
             dx = iperlin.fBm1(spy, spz, time, rt, 2.0f, Iterations);
             dy = iperlin.fBm1(spx, spz, time, rt, 2.0f, Iterations);
             dz = iperlin.fBm1(spx, spy, time, rt, 2.0f, Iterations);
         }
         else
         {
             dx = iperlin.Noise(spy, spz, time);
             dy = iperlin.Noise(spx, spz, time);
             dz = iperlin.Noise(spx, spy, time);
         }
 
         p.x += dx * Strength.x;
         p.y += dy * Strength.y;
         p.z += dz * Strength.z;
 
         return invtm.MultiplyPoint3x4(p);
     }
 
     //public override bool ModLateUpdate(Modifiers mc)
     public override bool ModLateUpdate(MegaModContext mc)
     {
         if ( Animate )
             Phase += Time.deltaTime * Freq;
         time = Phase;
 
         return Prepare(mc);
     }
 
     public override bool Prepare(MegaModContext mc)
     {
         // Need this in a GetDeformer type method, then drawgizmo can be common
         if ( Scale == 0.0f )
             scale = 0.000001f;
         else
             scale = 1.0f / Scale;
 
         rt = 1.0f - Rough;
 
         return true;
     }
 }

and then i got this wired error:

NullReferenceException: Object reference not set to an instance of an object Boo.Lang.Runtime.RuntimeServices.GetDispatcher (System.Object target, System.String cacheKeyName, System.Type[] cacheKeyTypes, Boo.Lang.Runtime.DynamicDispatching.DispatcherFactory factory) Boo.Lang.Runtime.RuntimeServices.GetDispatcher (System.Object target, System.Object[] args, System.String cacheKeyName, Boo.Lang.Runtime.DynamicDispatching.DispatcherFactory factory) Boo.Lang.Runtime.RuntimeServices.SetProperty (System.Object target, System.String name, System.Object value) ScaleObject.Update () (at Assets/Scripts/ScaleObject.js:13)

the c# file name is MegaNoise.cs and it works with the string "MegaNoise" over another project , but in here it doesn't wondering why!? any one please help!