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SharePoint PowerApps Cascading dropdown reset child dropdown items in EditForm not working

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Posted on by kagsch

I have a similar issue like his one but the accepted solution is for new items and my issue is with editing items:

https://powerusers.microsoft.com/t5/Building-Power-Apps/SharePoint-PowerApps-Cascading-dropdown-reset-child-dropdown/td-p/336319

In my sharepoint form I have dropdown 1 and the items in dropdown 2 are filtered depending on the selection in dropdown 1. Only one item can be selected.

I want to reset the selected item in dropdown 2 if the selected value in dropdown 1 changes. This works fine in the powerapps preview or when creating a new item: when I change the selection in the parent dropdown, the child dropdown is reset. But when editing an item, the child dropdown does not reset.

The onchange property in the parent dropdown is:

UpdateContext({ResetDropdown: true});

UpdateContext({ResetDropdown: false})

The Reset property in the child dropdown is: ResetDropdown

The default property of the Child datacard is: ThisItem.Sharepointcolumnname

Any suggestions are very welcome. Many thanks!

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Building Power Apps

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WarrenBelz 156,454 Most Valuable Professional on at

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Hi @kagsch ,

Have you tried resetting the drop-down directly?

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kagsch 4 on at

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Hi @WarrenBelz
I am new to powerapps - how do you mean reset the drop-down directly?

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WarrenBelz 156,454 Most Valuable Professional on at

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Hi @kagsch ,

Instead of

UpdateContext({ResetDropdown: true});

just put (replace with your DD name)

Reset(YourDropDownName)

and it will reset to its Default value.

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kagsch 4 on at

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Hi @WarrenBelz ,
Unfortunately that also didn't work.
Could it be due to the Default property? It refers to the SharePoint column:

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WarrenBelz 156,454 Most Valuable Professional on at

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@kagsch ,

It does work - it is just that it is resetting the control to the SharePoint field, which is the Default (which is what your code probably does as well). Are you trying to clear the control? If so, keep the Variable, but instead of putting it on the Reset, put this in the Default

If( ResetDropdown, Blank(), ThisItem.PrimaryTopic )

then reset directly.

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