Data not passed on teams messaging submit action [bot framework nodejs]

Hi,

Using the nodejs SDK, processing the click of a button in the pallate on the bottom of the screen with the method: handleTeamsMessagingExtensionSubmitAction

I have a form input in my adaptive card (below) with an id set, but `data` is empty when the framework receives the submission.

How can i get the value of the `number` choice field?

{
    "$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
    "type": "AdaptiveCard",
    "version": "1.4",
    "body": [
        {
            "type": "TextBlock",
            "size": "Large",
            "weight": "Bolder",
            "wrap": true,
            "style": "heading",
            "text": "Enable Inbound SMS"
        },
        {
            "type": "TextBlock",
            "text": "In order to receive replies to your SMS's sent from this chat thread, click the 'Enable Inbound SMS' button below.",
            "wrap": true
        },
        {
            "type": "TextBlock",
            "text": "You can choose a specific virtual number, or to receive messages to all virtual numbers. Note that multiple channels can be configured receive inbounds.",
            "wrap": true
        },
        {
            "id": "number",
            "type": "Input.ChoiceSet",
            "isRequired": true,
            "choices": [
                {
                    "$data": "${numbers}",
                    "title": "${label}",
                    "value": "${number}"
                }
            ],
            "placeholder": "Select Virtual Number"
        }
    ],
    "actions": [
        {
            "type": "Action.Submit",
            "title": "Enable Inbound SMS"
        }
    ]
}

YannickReekmans