Extracting the Display Name for a Json text/string value...from a Multiple Person Column

[sasrsc1966]

ForAll(
    GalRequests.AllItems,
    Collect(
        itemsForCsv,
        {
            ID: ThisRecord.ID,
            Contacts: ThisRecord.Contacts.DisplayName
        }
    )
);

I am creating a collection that I will convert to JSON for a user to be able to Export to a CSV (using Flow). 

My question is that ThisRecord.Contacts is a multiple person column in SP.

In my ForAll (which is looping through my Gallery Items) I need to produce a "Contacts:" object containing the DisplayNames of each person but stored as a single string. Just not sure how to do this syntax.

So hence the result would be etc....
"Contacts": "Batman, Mickey Mouse, Freddie Mercury" 

[BCLS776]

Try:

Contacts: Concat(ThisRecord.Contacts.DisplayName,", ")

Hope that helps,

Bryan

[sasrsc1966 · Accepted solution]

Thank you @BCLS776 .. that got me headed in the right direction... 

The correct answer was ...

Contacts: Concat(ThisRecord.Contacts.DisplayName,DisplayName,", "),

and here it is in the entire onSelect property...

ForAll(
    GalRequests.AllItems,
    Collect(
        itemsForCsv,
        {
            ID: ThisRecord.ID,
            Title: ThisRecord.Title,
            Status: ThisRecord.Status,
            Contacts: Concat(ThisRecord.Contacts.DisplayName,DisplayName,", "),
            DateTimeUTC: ThisRecord.'Air Date Time',
            WebinarDateTime: Text(DateTimeValue(ThisRecord.'Air Date Time'),DateTimeFormat.ShortDateTime),
            WebinarDate: Text(DateTimeValue(ThisRecord.'Air Date Time'),DateTimeFormat.ShortDate),
            Duration: ThisRecord.Duration,
            Sector: ThisRecord.'Sector Target',
            'Key Focus': ThisRecord.'Key Focus',
            Format: ThisRecord.'Format Options',
            CreatedBy: ThisRecord.'Created By'.DisplayName,
            ModifiedBy: ThisRecord.'Modified By'.DisplayName,
            Created: ThisRecord.Created,
            Modified: ThisRecord.Modified


        }
    )
);
Notify(
    "An Excel file is being created. It will save on your OneDrive location",
    NotificationType.Information,
    3000
);
Set(
    fileOpen,
    ExportToExcel.Run(
        JSON(
            itemsForCsv,
            JSONFormat.IncludeBinaryData & JSONFormat.IgnoreUnsupportedTypes
        ),
        "Webinars"
    ).filelink
);
Launch(fileOpen);
Clear(itemsForCsv);