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Power Platform Community / Forums / Power Automate / "On Power BI Button Cl...
Power Automate
Suggested Answer

"On Power BI Button Clicked" process step error-outputs Null

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Posted on by SB-03071614-0 2
I have a Power BI file with a download button to save the data to a CSV. Yes, I know you can click the "More Options" on the visual but I want this to be more user friendly.
 
I have the desired columns in the Visualization well (see second screen shot).
 
When I run the flow, I get this error:  The 'from' property value in the 'table' action inputs is of type 'Null'. The value must be of type 'Array'.
 
 
run details.txt
Categories:
Building flows
I have the same question (0)
  • lbendlin Profile Picture
    lbendlin 8,655 Super User 2026 Season 1 on at
    You have accidentally switched to the "New Designer".  That will break the Power BI integration.  Revert back to the legacy designer and - if necessary - remove and re-add the trigger.
  • Suggested answer
    Riyaz_riz11 Profile Picture
    Riyaz_riz11 4,116 Super User 2026 Season 1 on at
    HI,

    Make sure your Power BI button is configured to pass the table data

    In Power BI Desktop:

    1. Select the Button.

    2. Go to the Action pane.

    3. Under Type, confirm:

       Power Automate.

    4. Under Data, make sure:

      • You have a table or visual selected in the Data dropdown.

      • Fields to pass are selected (columns).

     If you don’t select fields to pass, the trigger gets {}.

     Use the correct dynamic content

    In your flow:

    • Instead of using Body or rows blindly, inspect the trigger outputs after a test run:

      • Click Show raw outputs.

      • Look for where your array is actually coming in.

    • If you see rows, your Create CSV Table should be configured:

      • From: rows

     Example of the correct setup:

    Trigger:

    On Power BI button clicked

    Create CSV Table:

    • From: rows (or triggerBody()?['rows'] in expressions)

    Defensive check before creating the CSV

    Even if you fix the data context, sometimes users click the button with no rows selected.

     To prevent the null error, add a Condition:

    Condition:

    length(triggerBody()?['rows']) is greater than 0

    If Yes:

    • Create CSV Table

       If No:

    • Send a notification or do nothing

     Example expression in the Condition:

    length(triggerBody()?['rows'])

    Test with sample data

    Before finalizing:

    1. In Power BI Desktop, select a few rows in the visual.

    2. Click the button.

    3. Go back to Flow Run History:

      • Verify the rows array has data.

    If I have answered your question, please mark it as the preferred solution ✅ . If you like my response, please give it a Thumbs Up 👍.
    Regards,
    Riyaz

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