Components - Screen Navigation

[eka]

I am following the solution given by Mr Dang in answer to PowerAppUser87

All is fine except when i click on the Gallery button, there no response. I guess I am not getting the point 9 very well

" Point the custom Items property of the component to the collection you just made"

Help will be much appreciated

https://powerusers.microsoft.com/t5/Creating-Apps/Components-Screen-Navigation/td-p/242680/page/1