Send multiple attachments using DriveApp.getFileById in Google Apps Script - email

Question

I am trying to get a script running that takes multiple file IDs from a Google Sheet and attaches them to an email. I cannot get multiple files to be attached using DriveApp.getFileById.
The script runs and fires off an email, but with no attachments.
function createAndSendDocument(values) {
// Get the email address of the active user
var email = Session.getActiveUser().getEmail();
// Get the name of the document to use as an email subject line.
var subject = 'New Paperwork';
//Let's add the attachments variables
var attachmentstring = values["Which documents do you want to attach?"];
var array = attachmentstring.toString().split(",");
var blobs = [];
var x = 0;
for (var i = 0; i < array.length; i++) {
//check if even
if (i % 2 === 0) {
blobs[x] = array[i];
x++;
}
}
// Append a new string to the "url" variable to use as an email body.
var body = 'your doc: ' + blobs[0] + blobs[1] + array[0] + array[1] + "length:" + array.length;
// Send yourself an email with a link to the document.
GmailApp.sendEmail(email, subject, body, {attachments: blobs});
}
I edited the original post to include the snippet of code. Here is the output of the blobs and array.
undefinedundefinedW-4 2019.pdf1YjQqFNze8VX0L6wZ9O3Y9AJNznR8jfxqlength:4

Answer 1

This code worked:
function createAndSendDocument(values) {
// Get the email address of the active user
var email = Session.getActiveUser().getEmail();
// email subject line.
var subject = 'New Paperwork';
// add the attachments variables
var attachmentstring = values["Which documents do you want to attach?"];
var array = attachmentstring.toString().split(",");
var blobs = [];
var x = 0;
for (var i = 0; i < array.length; i++) {
//check if even
if (i % 2 === 0) {
}
else
{
blobs[x] = DriveApp.getFileById(array[i]).getBlob();
x++;
}
}
// an email body.
var body = 'Hello';
// Send an email with attachments
GmailApp.sendEmail(email, subject, body, {attachments: blobs});
}