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MS Form with Multiple Optional File Upload Questions

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Posted on by LaurieL

I have a flow that will do the following:

When a response is submitted, create an item on a SharePoint list and populate it with values from the form response.

Create an HTML file from the response, convert it to a PDF, and add the PDF to a SharePoint library.

Take files from an optional file upload item on the form, append them to an array variable, create files from them and add the files to the same SharePoint library.

These are my steps:

Here's where I'm stuck. I think I need parallel branches. One for when there are no supporting documents would send an email with just the form response PDF as an attachment. One if there are supporting documents would send both the form PDF and the supporting documents as attachments. I just don't know how to do it. I can't even figure out how to attach just the form PDF to an email within the same flow.

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BhaskarDhone 1,398 Super User 2026 Season 1 on at

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You don’t need parallel branches. Instead:
   1.   Create an array variable called Attachments.
   2.   Add the PDF to this array.
{
"Name": "FormResponse.pdf",
"ContentBytes": <PDF file content>
}
   3.   If files were uploaded, loop through them and add each to the same array.

{
"Name": <filename>,
"ContentBytes": <file content>
}

   4.   In the Send Email action, use this array in the Attachments field.

Attachments: @{variables('Attachments')}

Power Automate will send:
   •   Just the PDF if no files were uploaded.
   •   PDF + files if uploads exist.

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LaurieL 30 on at

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I don't know how to reply to BhaskarDhone but I don't know how to do what you're suggesting. I don't know how I would incorporate these steps into my existing flow. I don't know how to get the PDF file content. I don't see it in the dynamic content. I'm not that great at Power Automate. It would help if there were a YouTube tutorial or something I could watch.

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