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Power Apps - Power Apps Pro Dev & ISV
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BI directional power app combo box value updates

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Need help urgently ,have to built power apps in that suppose i have 5 drop downs all values for them are coming into it from one master dataverse table, and in item property for drop down A, B, C etc i m binding respective distinct values from dataverse table , suppose now if i change drop down -A based on its selection it should update drop down B&C , similarly if change C it should update A&B values , same way if I change B accordingly it should show updated A&C values in drop down plus next if i select A it should combine with B it should  now update C values based B&A values,, can u tell me how to achieve it..
  • CU06060531-0 Profile Picture
    2 on at
    BI directional power app combo box value updates
    @michael e.gernaey pls consider table for example,
    Case 1:- So if i select BU as 'IT' in combo box it should filter practice combo box as well stream combo box with practice values as business application , infrastructure and common and stream value as A,C
    Case-2 :- now if i select practice combo box value as 'business application' now BU should show two values IT & Sale with default IT selected in practice combo box and stream value as A&C.
    Case-3:- Now if i select stream combo box value as 'C' it should now filter practice with values as default selected business application , global marketing and common, and BU combo box with values default selected as IT and sales.
     
    Hopefully it will clarify now.
  • Suggested answer
    Michael E. Gernaey Profile Picture
    42,749 Super User 2025 Season 1 on at
    BI directional power app combo box value updates
     
    You have to be absolutely specific, with all scenarios.
     
    What you are asking to do is (based on what you said) not going to work. Why? because you are describing recursion. You cannot change one things, that changes another, that changes another, which reflects back.
     
    So please be super line by line clear of what changes was what you wrote won't work.
     
    Think of it this way
     
    You said, change C based on A+B
    But then you said change A+B based on C.
     
    Cannot do this because it's literally going to loop and itself over and over and over.
     
    So we need to come up with a better strategy then how you are doing it.

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