Gridpanel As Item Of Tabpanel

I'm having trouble knowing if I syntactically have this setup right. From another thread, I understand to add the GridPanel to the tabBar items, which I do so below. In my App.js,

Solution 1:

There is no inbuilt GridPanel comes with Sencha Touch. So, that Ext.grid.GridPanel will not work here. However, you can use Simoen's TouchGrid extension from here.

All the source codes are available here.