Change the TV channels sort by buttons

Hi guys,

I am trying to be able to change the sort of TV channel come from simple client PVR by creating button. The way I did like this and worked with name sort but can't sorted by number.

I used the sorted method ID number like this

<onclick>Container.SetSortMethod(46)</onclick>

ID 46 for channelnumber but didn't work with men!

Any Idea for this issue

Thanks for all