Can't add CC to send email function

Hi, I was trying to create an email notification function, the code below works perfectly for single recipient, but I can't added more recipients using cc/bcc.

I have tried so many syntax but can't find the correct one, anyone know how to solve this so I can add more emails using CC? I have tried both email and UID btw

TypeScript

  recipientEmail: string,
  subject: string,
  content: string,
  appointmentSchedule: Date
) => {
  try {
    const scheduledTime = new Date(appointmentSchedule).toISOString();

    console.log(ID.unique());
    // console.log(ccEmails);
    console.log(recipientEmail);

    const message = await messaging.createEmail(
      ID.unique(), // Unique message ID
      subject, // Subject of the email
      content, // Content of the email
      [], // Topics (optional)
      [recipientEmail], // List of user emails (you can include more)
      [], // Targets (optional)
      ["example@mail.com"], // CC (optional)
      [], // BCC (optional)
      [], // Attachments (optional)
      false, // Draft (optional)
      true, // HTML content
      scheduledTime
    );

    return parseStringify(message);
  } catch (error) {
    console.error("An error occurred while sending email:", error);
  }
};```

TL;DR

Developers are trying to add CC to their email function but encountering issues with incorrect syntax. Errors received indicate invalid parameters for CC and BCC. The function works for single recipients but not multiple. To fix this, ensure the array for CC/BCC contains valid emails or UIDs.

Here are the errors I encounter:

TypeScript

  type: 'general_argument_invalid',
  response: {
    message: "Invalid `bcc` param: Value must a valid array and UID must contain at most 36 chars. Valid chars are a-z, A-Z, 0-9, and underscore. Can't start with a leading underscore",
    code: 400,
    type: 'general_argument_invalid',
    version: '1.6.0'
  }```

```code: 400,
  type: 'message_target_not_email',
  response: {
    message: 'Message with the target ID is not an email target.',
    code: 400,
    type: 'message_target_not_email',
    version: '1.6.0'
  }```