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Power Platform Community / Forums / Power Apps / Named Formulas Storing...
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Named Formulas Storing Results / Not Re-Calling?

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Posted on by BenKraft 176
I'm curious on when exactly named formulas are evaluated; it seems that for the most part they are evaluated when called, but when attempting to do something like:
 
 
I get the same value even when calling at different times. Would this be better as a function?
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Building Power Apps
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    Pstork1 Profile Picture
    Pstork1 69,556 Most Valuable Professional on at
    Named formulas are evaluated in a lazy fashion.  They are only re-evaluated if Power Apps detects a change in one of the parameters.  In your case it has a value for Now and Guid and doesn't detect a change.  As a test try this for a Named Formula
     
    NewTimeStamp = {Value: Testvalue, GUID: GUID()}
     
    Then create a button that increments Testvalue each time the button is pressed.
     
    Set(Testvalue, Testvalue +1)
     
    If you use the Named formula and then press the button and use it again the Value and GUID will change.  Some value in Power Apps needs to change of the named formula will just use the cached values.  If you switch your original value to use a timestamp generated by a timer in the app you fill find that the named formula works the way you expect.

    ----------------------------------------------------------------------------------
    If this Post helped you, please click "Does this answer your question" and give it a like to help others in the community find the answer too!

    Paul Papanek Stork, MVP
    Blog: https://www.dontpapanic.com/blog
     
     
  • BenKraft Profile Picture
    BenKraft 176 on at
    @Pstork1 That makes sense, thanks! I will then likely use a UDF.

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