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Flow is not triggered from Custom Page OnStart event

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Posted on by MZ_980

I have a flow that I'm trying to run from the Custom Page App OnStart event. I'm creating a collection with the response from my flow:

ClearCollect(
    collection1,
    ForAll(
        Table(ParseJSON(flowname.Run().body)),
        {
            Field1Name: Text(Value.Field1Name),
            Field1ID: Text(Value.Field1Id),
            Field2Name: Text(Value.Field2Name),
            Field2ID: Text(Value.Field2Id)
        }
    )
);

The collection is created, but there is no data. When I check the flow history, it says that it hasn't been run. I've tried running this on the OnVisible event for the screen, but I also get the same result. However, when I click a button with the same code, it works.

My options are

Trigger the flow from App OnStart (optimal)
Trigger the flow from the Screen OnVisible (good)
Trigger the flow by hiding the button and have either the App OnStart or Screen OnVisible event simulate the button OnSelect event. (Hacky)
Trigger the flow from the visible button. (Last resort)

If there are other options, please let me know. Otherwise, 1 or 2 would be preferred.

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MZ_980 95 on at

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RE: Flow is not triggered from Custom Page OnStart event

Hello. I added the Custom Page and ran it from my app instead of preview and the flow was triggered. Thanks for your help!
MZ_980 95 on at

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RE: Flow is not triggered from Custom Page OnStart event

Thanks for responding. I didn't try that option because of the latency added to loading my Custom Page.
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Haig Liu Microsoft Employee on at

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RE: Flow is not triggered from Custom Page OnStart event

Hi MZ_980,

Maybe it's just because of the preview:

https://sachinbansal.blog/2018/05/22/powerapp-canvas-onstart-event-does-not-fire-in-app-preview/
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Pradeep Rai 5,490 Super User 2024 Season 2 on at

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RE: Flow is not triggered from Custom Page OnStart event

Hi,

It is because of async behaviour i would suggest to go with 4 option.

But can you try using wait as described below:
https://debajmecrm.com/how-to-introduce-delay-or-wait-in-actions-in-power-apps-canvas-apps/