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Post Partisan
Post Partisan

SP lookup columns customize forms



i have 3 SP lists

1) 'Areas' with 2 columns (Lookup fields) "Workstream" & "Subworkstream"

2)'WorkStream' with 1 column "Title"

3) 'SubWorkStream' with 2 columns "Workstream" which is a lookup column to (WorkStream) list and "Sub-workstream"


i want to customize the form and Filter the subworkstream dropdown to match the selected result of the workstream dropdown.


I tried it using text columns "Workstream" & "Subworkstream" and it works like a charm.

But i want both columns to be lookup fields in the SP list. Any ideas people?


Accepted Solutions

So, i tried matching the ids of the two lookup columns and..


Filter(ShowColumns(SubWorkStream, "ID", "Workstream","Subworkstream"), Workstream.Id = DataCardValue3.Selected.ID)


i seem to get my results!

However i am still not sure if that is the best practice!


View solution in original post

Most Valuable Professional
Most Valuable Professional

Hi @marial16 ,

Just so I get your requirements correct, you have a lookup column which you want to filter even further with the item selected in another lookup column?

My first question is if PowerApps is the only interface used on this list as if so, there may be a much easier solution.



Yes i only use powerapps and sharepoint so far in my app. i want to be able to update the list when i click on 'New' from the customized form.


if these two columns were SLT columns in SP ,then i could change their text input properties from PowerApps as below:




Filter(SubWorkStream, WorkstreamTitle = DataCardValue6.Selected.Result)


where 'WorkstreamTitle' is an additional SLT column in SubWorkStream List!!


However Lookup Columns as they are are giving me a headache!

So I only came to match the Workstream LookUp column in Tasks List to the Title of the SubWorkStream List which is wrong apparently..

ShowColumns(WorkStream,"Title","ID")    in PowerApps workstream datacard  and

Filter(ShowColumns(SubWorkStream,"Title","Workstream"), Workstream.Value = DataCardValue3.Selected.Title)

Community Support
Community Support

Hi @marial16 ,

Could you please share a bit more about your scenario?

Do you want the "Subworkstream" Dropdown box (ComboBox) to show up corresponding Subworkstream options related to the selected Workstream option?


I have made a test on my side, please consider take a try with the following workaround:

Set the Items property of the "Subworkstream" ComboBox to following:

       Value in Filter(SubWorkStream, Workstream.Value = WorkstreamComboBox.Selected.Value).Sub-workstream

Note: The WorkstreamComboBox represents the Workstream ComboBox within your Edit form, you need to replace it with actual control name from your Edit form.


Please consider take a try with above solution, then check if the issue is solved.


Best regards,

Community Support Team _ Kris Dai
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
Most Valuable Professional
Most Valuable Professional

OK @marial16 ,

I will give you a syntax to work on - I have tested this and it works

     Value=WorkstreamComboBox.Selected.xxxx  //xxxx is whatever the output of this box


Basically you have to take the existing Lookup choices and filter them with the output of the other combo box.

What I was going to suggest earlier is that if you only use PowerApps as an interface, you can ditch the lookup columns all together (as I have) and write back to plain text fields, doing all the lookups in Power Apps.

Please click Accept as solution if my post helped you solve your issue. This will help others find it more readily. It also closes the item. If the content was useful in other ways, please consider giving it Thumbs Up.

this formula only allows me to use Title or ID. 

When i type Value it says that the identifier is not recognized.


i also changed the advance properties of the dropdown on the right menu to  Display fields ["Value"]. I still get an error

and even when i am not getting an error , the data in the subworkstream dropdown arent displayed!

Most Valuable Professional
Most Valuable Professional

HI @marial16 ,

That is why I had xxxx. So let's break this down - firstly, if you just put


in the box, do you see the values you expect? Then put a label on the screen with (change to your name)


select something in the other box and see if it reflected in the label.
If so, can you get the same value to appear in both places?


I am getting the ID value in Subworkstream dropdown with Choices([@Areas].Subworkstream)

So, i tried matching the ids of the two lookup columns and..


Filter(ShowColumns(SubWorkStream, "ID", "Workstream","Subworkstream"), Workstream.Id = DataCardValue3.Selected.ID)


i seem to get my results!

However i am still not sure if that is the best practice!


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