@SendGridOutput ignores personalizations->dynamic_template_data

[vgarmash]

Hello.

We are trying to use SendGridOutput to send outbound emails from our functions. For each email we need to use dynamic template with handlebars. Learn more on these here:

1. https://sendgrid.com/docs/ui/sending-email/how-to-send-an-email-with-dynamic-transactional-templates/
2. https://sendgrid.com/docs/for-developers/sending-email/using-handlebars/

We've created several dynamic templates and for all of them we see similar issue: the dynamic_template_data is not being applied to the template so all placeholders are empty.

Here is the real example:

Template code:

<p>Hello {{ firstName }}.</p>
<br>
<p>We've received new call back request {{ callbackId }} at {{ callbackTimestamp }}.</p>
<p>Please follow up with the new enrollee {{ enrolleeFirstName }} {{ enrolleeLastName }} at <a href="tel:{{ enrolleePhone }}">{{ enrolleePhone }}</a> .</p>
<br>
<p>Yours truly, subscription bot.</p>

The value we put into the output value (OutputBinding outSendgridMessage):

{
  "personalizations":
     [
       {
        "to": [{"email":"my@email.com"}],
        "dynamic_template_data: {
            "firstName":"Coach",
            "enrolleePhone":"7879090099",
            "callbackId":null,
            "enrolleeFirstName":"Joe",
            "enrolleeLastName":"Test105",
            "callbackTimestamp":1615493135111
          }
       }
    ],
  "content":[{"type":"text/html","value":"The new call back request has been received."}],
  "template_id":"d-7a92d5731fc942bb87dd4bfc2ac02afd"
}

The email comes without data:

Please investigate why it is happening.