'detail screen from grouped gallery

I've built a Powerapp from a very simple excel file (MyData) with 3 columns (A,B, C).

Now I've 3 screens from the template: Browse, Detail, Edit. In the Browse screen, I've added a new Gallery grouping the original MyData by column "A" GroupBy(MyData;"A";"GroupedData"). Then I added a SubGallery ("GroupedGallery") with single items from Mydata (ThisItem.GroupedData). In this Subgallery I have a right arrow and I'd like to point to Detail Screen So I added a second Detail screen (Detail2), In the right arrow property I've changed the OnSelct Property to "Navigate(Detail2)".

I've tried many things on the Detail2 screen but I couldn't manage to have the details of the selected item.

Among those, on the Item Property I tried to write "GroupedGallery.Selected".

Do you have any suggestions? Thanks



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