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Dependent Dropdown on Custom Form not Sending Inputs to SharePoint List

I'm new to PowerApps and I'm trying to customize a form for a SharePoint List with dependent dropdowns. The data source for the dropdowns is an excel file with a mapping of phase to various milestones. The dropdowns are working well and showing on the form, but the data isn't appearing in the SharePoint List. 


I found this post with a similar issue, but I couldn't get the solution to work for me. 


Here's the code I tried in the update box on the Milestone_Card

'Milestone Selector'.SelectedItems,

Milestone is a choice column in the SharePoint list. I've attached a screenshot as well for reference. 


Any help would be greatly appreciated!


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Hi @Anonymous 


Per the screen shot the "Update" property should map to the Column in Sharepoint


You need to set the default property of the dropdown to the formula mentioned.



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Thanks, @Anonymous! Something isn't working still (likely user error). I published the changes of the form and tried to select a value for Milestone on the form and it still didn't populate on the SharePoint list in the Milestone column.


Can you take a look at this screenshot and see if this is what you meant? 

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my bad. the default property should set a value to the Field. This would be from the list/table.  You are setting a context variable.



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@Anonymous - Here's what I have to put in the default property for the dropdown:


Distinct(Filter(Table2, Phase = 'Phase Selector'.Selected.Value), Milestone)

Is this what you meant? Sorry, I'm trying to learn on the fly. 

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