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Posted on by rpersad

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Not sure if anyone has tried this before but I am trying to enable the option for users to download a PDF version of a form created using HTML code.

Found this video on youtube https://youtu.be/PlBPCi4yXVs?si=YeuuU03xymEjIe72&t=828 which demonstrates this by using the PDF function with the attachment control.

However, when I select the attachment control I get the 404 error on my browser, see screenshot attached.

Here is the code for my button to generate the PDF blob:

Set(pdfContent, JSON(PDF(Container2),JSONFormat.IncludeBinaryData));

Here it my attachment control item property code:

[{Name: "amendment.pdf", Value: Substitute(pdfContent, """","")}]

image_2025-06-13_...

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Sam_Fawzi 501 Super User 2025 Season 1 on at

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Hey @rpersad

Can you try change the Attachment Control Format to the below

Table({Name: "amendment.pdf", Value: Mid(pdfContent, 2, Len(pdfContent) - 2)})
stampcoin 2,962 on at

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@rpersad Hi,

Have you tried to remove the attachment control, and add a new one.

I had one broken and after re-add, it works.

Your previous image shows correct ( pdfcontent).

You have to use {} rather than [], the items need a table value, not array.

The mid function is for removing the "", so the value doesn't contain it.

try add a new one and feel free if you have any question.
rpersad 752 on at

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Hi @stampcoin,

My button 'OnSelect' code is the same, I have my Html text in a container (Container2) and am referencing the container in the JSON function

My Attachment control, 'Items' property was slightly different. I had a capital "V" for the value and had my code in square brackets '[ ]'. Tried updating it to match your code I am still getting the same error.
stampcoin 2,962 on at

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@rpersad Hi,

How did you add the attachment control ?

I share mine for your reference. ( My old control seems broken, I re-added the attachment control).

Button: onselect =

Set(

pdfcontent,

JSON(

PDF(DataTable1,{DPI:60}),

JSONFormat.IncludeBinaryData

)

);

Navigate(Screen1)

On Screen1:

Attachment control, Items=

{

Name: "Test.PDF",

value: Mid(

pdfcontent,2,

Len(pdfcontent) - 2

)

}

click the file, it will download.
rpersad 752 on at

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@stampcoin

I did put the HTML text into a container named Container2 as shown in the question. And in my case I also am not trying to download from a real address location of the file

Here is a screenshot of the data being saved in the pdfContent variable which was passed from my JSON function
stampcoin 2,962 on at

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@rpersad hi

Did you render the content (html) first in the container ?

Do you understand wp 's explanation ?

To make it clear, that case is not download from a real address.
rpersad 752 on at

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Hi @stampcoin

Thanks for the response did try using the code but the issue still persists

For the button to convert the HTML to JSON in the PDF function I have tried:

Including the "ExpandContainers: true" in the function

Including the "ExpandContainers: false" in the function

Removing the "ExpandContainers" property in the function

In the attachment control I have tried using the code below:

[{Name: "amendment.pdf", Value: pdfContent}]

{Name: "amendment.pdf", Value: pdfContent}

[{Name: "amendment.pdf", Value: Mid(pdfContent, 2, Len(pdfContent) - 2)}]

{Name: "amendment.pdf", Value: Mid(pdfContent, 2, Len(pdfContent) - 2)}

[{name: "amendment.pdf", value: Mid(pdfContent, 2, Len(pdfContent) - 2)}]

{name: "amendment.pdf", value: Mid(pdfContent, 2, Len(pdfContent) - 2)}

Note: When I changed 'Name' and 'Value' to common letters nothing happened when I clicked the attachment control
stampcoin 2,962 on at

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@rpersad Hi,

I hope this case will give you a lead.

https://community.powerplatform.com/forums/thread/details/?threadid=1aff0960-ca25-f011-8c4e-7c1e52466c21