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Passing the PowerApps Collection to MS Flow

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Posted on by svijay_001 Microsoft Employee

I was actually looking for a way to pass the entire collection that was there in the PowerApps to the MS Follow for subsequent action to be taken based on data at each row of the collection.

There is no direct way to achieve it at this point of time.

Doing a forall & concatenate seemed slow and complicated respectively.

I found an easy way to achieve the above.

Here's what I did :

Converted the collection to the JSON
- Set(JSONName, JSON(CollectionName ))
- The collection was now formatted to JSON and got stored in the variable JSONName
Created a flow which parses the JSON which is gets passed from the PowerApps
From PowerApps you can pass the JSON Formatted Collection (JSONName)
Flowname.Run(JSONName)

Now you can manipulate collection data at the flow end like anyother JSON data.

Note/Tip & Trick :

For the schema of the JSON that needs to be provided at the flow end in the Parse JSON step.

You can set the text value of label as the Json Variable(JSONName). Copy paste the content of the label in the Parse JSON flow step.

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Building Power Apps

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RandyHayes 76,299 Super User 2024 Season 1 on at

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@svijay_001

Two thumbs up for the new JSON function!!

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v-yutliu-msft Microsoft Employee on at

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Hi @svijay_001 ,
Thanks for your sharing!
The new function of JSON is quite useful.
Here's a doc about how to use json:
https://powerapps.microsoft.com/en-us/blog/json-for-canvas-apps/

Best regards,
Community Support Team _ Phoebe Liu

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Community Power Pla... Microsoft Employee on at

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Hey!
Is there any way you could post more on what you have in the schema and the contents of your collection? I'm working on adding the same type of functionality, but when I display the variable it gives me a hard coded response on what is in the collection. My app is intended to act as a form that will be sent to sql server, so the inputs are going to vary. I'm wondering how I would call the values if they're going to be changing.

Thanks!

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svijay_001 Microsoft Employee on at

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I did not understand your questions ? Can you please elaborate ?

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RyanXExner 96 on at

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Thank you for the post, it really helped! We found out that embedding the JSON format directly into the Flow Param works as well (just in case you don't want to have to initiate another variable).

'SampleFlow'.Run(JSON(colSampleCollection, JSONFormat.IgnoreBinaryData))

@Anonymous, the following schema should allow you to parse the JSON input with keeping the flexibility on the properties:

{
  "type": "array",
  "items": {
    "type": "object"
  }
}

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MustafaHussain 173 on at

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Hi @svijay_001 @v-yutliu-msft

I have Dataverse as a Datasource and I have a gallery of the data coming from there

and I am getting this error when I set the collection in JSON format

Please help

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PaulUK86 43 on at

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Is the first command done in the powerapp or in power automate?
Set(JSONName, JSON(CollectionName ))
I think this function could really help as I need to pass a collection to power automate and then into a word template! Thank you for any help!

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