Hi Kanha,

Can you show me what you have in your view and controller? If I can see a little of what you are doing it will help to see what to recommend.

Also, are all your bands loaded at initialization or are they loaded-on-demand? If load-on-demand, is it that your band isn't loaded yet, and that's why you are not able to export the child levels?

Any errors?

Let me know the above and any specific questions and I will proceed to look into this for you.