Main Camera Orthographic doesn't work after build

I'm newbie with Unity3D.

here is my source, very simple

 public void persp_ortho_Btn_Clicked()
 {
     if (!Camera_Controller.shared_instance.isOrthoCamera)
     {
         Camera_Controller.shared_instance.isOrthoCamera = true;
         Camera.main.orthographic = true;
         ui_camera.orthographic = true;
     }
     else
     {
         Camera_Controller.shared_instance.isOrthoCamera = false;
         Camera.main.orthographic = false;
         ui_camera.orthographic = false;
     }
 }

When i run with this code in Editor (Game simulate window) this works well like below :

But, after build and run .exe, main camera doesn't change to ortho camera, also like below :

it seems the "orthographic" property of main camera is change true to false, false to true in built runtime as well either.
But maybe the view matrix is not changed.

Why this happen and how can i fix this ??