I do have the following scenario:
- 1 screen with an overview of all kind of menus. The days displayed are a vertical gallery with a nested horizontal gallery to show the menus per day. The checkboxes on the screen are for a thing so called "multi-menu-order" for employees who want to order menus for the whole week.

- 1 screen for the multi-order which shows all selected menus from the previous screen in a horizontal gallery.

Now the desired result would be: If I click on the back button I get to the previous overview and the selected checkboxes are still selected, which is the case. But if I click on the button "Order menu", the checkboxes should be resetted, which is currently not working.
Multiple Order Screen
- Back Button

- Order Button
ForAll(SelectedItems,Patch(
MenuOrder,
Defaults(MenuOrder),
{
Titel: "Mehrfachbestellung",
MenuID: {
'@odata.type': "#Microsoft.Azure.Connectors.SharePoint.SPListExpandedReference",
Id: Value(Menü.ID),
Value: Value(Menü.Title)
},
Anzahl:Value(AnzahlValue_1.Text),
Verrechnung: VerrechnungValue_1.Selected,
'verspätetes Essen':verspätetesEssenValue_1.Value,
'Tisch reservieren':TischreservierenValue_1.Value,
Bemerkungen:BemerkungenValue_1.Text,
KostenstelleLU: {
'@odata.type': "#Microsoft.Azure.Connectors.SharePoint.SPListExpandedReference",
Id: Value(KostenstelleValue_1.Selected.Id),
Value: Value(KostenstelleValue_1.Selected.Value)
},
'Art der Verrechnung': DataCardValue42_1.Selected,
Menüdatum: MehrfachbestellungDate
}
));
UpdateContext({ResetCheckbox:true});
UpdateContext({ResetCheckbox:false});
Notify(Switch(Language,"GER", "Danke für die Bestellung", "ENG", "Thank you for ordering", "FR", "Merci d'avoir passé commande"));
Back()found here: https://powerusers.microsoft.com/t5/General-Discussion/Reset-Checkboxes-in-Gallery/m-p/101559#M37545
Menu Overview
- Structure

- Checkbox Properties
Default = false
OnCheck =Collect(SelectedItems, {Menü:ThisItem,MehrfachbestellungDate:DateValue(glryDayMenüplan.Selected.lblMenüplanDateFormat.Text)})OnUnCheck =Remove(SelectedItems,{Menü:ThisItem,MehrfachbestellungDate:DateValue(glryDayMenüplan.Selected.lblMenüplanDateFormat.Text)})Reset = ResetCheckbox
Is it just not possible to reset checkboxes in nested galleries or is there anything missing from my side?
Cheers,
uhlme