Cannot mention person in Adaptive Card using Teams PowerShell Module

Question

I have registered an Incoming Messages Webhook in one of my Teams channels. I am using Microsoft Teams PowerShell to create an adaptive card and send it to a channel:

$SimpleCard = @{
    type = "message";
    attachments = @(@{
        contentType  = 'application/vnd.microsoft.card.adaptive';
        contentUrl = $null;
        content = @{
            '$schema' = 'http://adaptivecards.io/schemas/adaptive-card.json';
            type = 'AdaptiveCard';
            version = '1.2';
            body = @(@{
                type = 'TextBlock';
                text = "Hello <at>[email protected]</at>";
            })
        }
    });
    msteams = @{
        entities = @(@{
            type = 'mention';
            text = "<at>[email protected]</at>";
            mentioned = @{
                id = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx";
                name = 'Andrea Tino';
            }
        })
    }
}

Invoke-RestMethod -Method post
                  -ContentType 'Application/Json'
                  -Body ($SimpleCard | ConvertTo-Json -Depth 10)
                  -Uri "https://myorg.webhook.office.com/webhookb2/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx@xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/IncomingWebhook/xxxxxxxx/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"

The card is correctly sent but the mention is not correctly rendered.

Wrong ID?

It is worth mentioning that the doc makes explicit reference to a type of User ID:

{
  "type": "mention",
  "text": "<at>John Doe</at>",
  "mentioned": {
    "id": "29:123124124124",
    "name": "John Doe"
  }
}

You can see that the ID in the example is: "id": "29:123124124124" while mine is a GUID. I retrieved that User ID by means of Get-TeamUser.

What am I doing wrong?

Answer 1

Mention in adaptive card is supported only in context of bot and the available ways to get id are listed in the document - mention-support-within-adaptive-cards-v12

Concerned team is working to support user mention using AAD Object Id and UPN(use Graph API) in Incoming Webhook.