How to Extract an Array from a JSON Object to Use in a Apply To Each

[DougL]

I have a Swagger Defined REST Web Service that returns something in the format of the following:

{
    "Id": "86790819-21b1-4881-9af2-86297f586021",
    "Status": "OK",
    "ProviderName": "MyApp",
    "DateTimeUTC": "/Date(1508339098344)/",
    "Invoices": [
        {
            "Type": "ACCPAY",
            "InvoiceID": "20ff01b8-c2d8-49bb-8abf-a9486c9ea665",
            "InvoiceNumber": "RPT644-1",
            "Reference": "",
        },
        {
            "Type": "ACCPAY",
            "InvoiceID": "20aaa1b8-c2a8-49ab-8abf-a9a86caeaaa6a",
            "InvoiceNumber": "RPT644-2",
            "Reference": "",
        }
    ]
}

I want to cycle through all of the Invoices and grab the InvoiceId to then use in a later flow call, but I can't figure out the proper way to reference the properties of a JSON.

Since this structure is all defined in Swagger, I thought it would be as easy as doing an Apply To Each on the Invoices; but that is not identified as a parameter since its an object that has a property that has an array.

Based on my searches, it sounds like I should be able to use Compose somehow, but I'm not sure how to reference the property.

e.g. In concept, I feel like I should be able to put the following as the source of a Apply To Each:

json(body('getInvoices')).Invoices

But that gets a syntax error. There has to be something similar, but I can't seem to find a place where all of this is documented and even the old threads on here seem to show an earlier version of Microsoft Flow with stuff like Value{} which I don't see anywhere.

[DougL · Accepted solution]

As soon as I posted this, I found more actions I hadn't seen before.

1) Search for "Compose" within Actions.

2) Choose "Parse JSON"

    - I gave an example payload for parsing.

3) Choose Apply To Each and use the Array as Input

Wallah, I'm good to go.

[IronFelix]

Hi @DougL  for point 3 3) Choose Apply To Each and use the Array as Input, what is the array you compose?

I have the same problem.

Kind regard