Custom Tabgroup Appcelerator

I'm trying to make a custom tabgroup in appcelerator in which one (or two) of the tabs is bigger than the rest. I have attached an image of what I'm trying to pull off.

I am able to make a custom tabgroup, but it refreshes each time I change a tab, and I want my tabs to behave like a native tabgroup. Any help would be much appreciated

Example

Solution

I figured out this issue. For anyone that has this same issue in the future this should help: The tabgroup is its own view. If you want to add overlays to it, make a new view, and add it to the tabgroup, NOT to the window itself.