Attachments between Creator and CRM Leads module

Attachments between Creator and CRM Leads module

Hi, I developed an form on Zoho Creator. 
I added a Workflow on Submission that sends an email to the user, attaching the record's PDF template to the email. I need that PDF to appear as an attachment in the CRM Lead module.

I've already tried to add the following script on Submission, as reported in other posts:
  1.  file_object = invokeUrl
  2.  [
  3.  url: "https://assets.pcmag.com/media/images/431075-zoho-logo.jpg?width=810&height=456"
  4.  type: GET
  5.  ];
  6.  response = zoho.crm.attachFile("Leads",4770XXXXXXXXXX,file_object);
But i face 2 main issues
1. Even if I try to add a jpg image, as in the example, it seems it doesn't work because the lead has no attachment.
2. I don't know how to find the url of the PDF that Creator generates through its Template system. 

It seems to be a pretty hard task, which doesn't make any sense because it's super-easy to attach a PDF report to the Lead from Zoho Forms... but seems to be impossible from Zoho Creator!!!

if this is not possible (!?!), It would be enough to me if the email sent to the user would appear on the Lead's "Email" section (where it records all the email sent to the Lead).