Public form to create a helpdesk ticket fails with attachment in flow

[atomicharri]

I'm following the guide to upload attachments as part of creating a Helpdesk ticket using Flow. I get the following error. I have tried wrapping the body('HTTP') in base64 also, but it still doesn't seem to work.

{
"attachments[0].AttachmentContent": [
"The input was not valid."
]
}

Here is my flow:

Result:

Your assistance is very much appreciated!

[Evgeniy]

Hello, Harri.

Please try to compose the JSON object without quotes for the values:

I will update the article to avoid confusing users. I am sorry for the troubles you have experienced with this.

[atomicharri]

Thanks for the clarification - tested and now working