Using invokeurl to upload files to Google Drive

I'm running into an issue when using invokeurl to attempt to upload files to Google Drive using the Google Drive API v3

When I run the code below I get this error: "Missing end boundary in multipart body"

However, I define the boundary string in the header, and include it in the parameters string.

When I run the same request in Postman, I get a successful response and it creates the file. Postman pics are attached.

How do I need to format this request in Deluge to get it working?

upload_PDF_url = "https://www.googleapis.com/upload/drive/v3/files?uploadType=multipart&supportsAllDrives=true";

upload_headers = Map();

upload_headers.put("Content-Type","multipart/related; boundary=foo_bar_baz");

// upload_headers.put("Content-Length",file_size);

upload_params = "--foo_bar_baz"+"\n"+"Content-Type: application/json; charset=UTF-8"+"\n"+"{'name':'Zoho_test.txt','parents':['1ZfH6_HIkH1AH5liITcIUqxiR92KzOByY']}"+"\n"+"--foo_bar_baz"+"\n"+"Content-Type: text/plain"+"\n"+"This is a test document."+"\n"+"--foo_bar_baz--";

//Upload PDF HTTP request

upload_PDF_response = invokeurl

[

url :upload_PDF_url

type :POST

headers: upload_headers

parameters:upload_params.toText()

connection:"zohogdrive"

];

info upload_PDF_response;