how can i save my form automatically to my local d:/ drive

[PRAVEEN_MUNNA]

i have a invoicing form but i required to save the form automatically if user press autosave button...to local d:/ drive with its invoice number as file name

example: inv no:60 to be saved as 60.pdf when i press autosave button

please help me scripting...

Untitled14pacetyre.pdf - Google Drive