add lightmapdata failure in real time(unity5.6)

I'm baked lightmap in A scene, I think in B scene(no lightmapdata) real-time load prefab and lightmap. I tried, lightmapindex and offset has been applied.But the shadow can't be rendered.

 LightmapData[] lightmaps = new LightmapData[1];

 lightmaps[0].lightmapColor = Resources.Load("lightmapColor", typeof(Texture2D)) as Texture2D;

 lightmaps[0].shadowMask = Resources.Load("shadowMask", typeof(Texture2D)) as Texture2D;

 LightmapSettings.lightProbes = null;

 LightmapSettings.lightmapsMode = LightmapsMode.NonDirectional;

 LightmapSettings.lightmaps = lightmaps.ToArray();

 render.lightmapIndex = lightmapIndex;

 render.lightmapScaleOffset = lightmapScaleOffset;

 render.enabled = true;