Auto Populate Fields of Acrobate attachment Form by filling Acrobat form

Hi, I have a Acrobat fill-able form and i have also an attachment in that fill-able form. The attachment is also a fill-able form.

I want the when i fill the Acrobat form, it automatically populate the fields attachment form.

For example: I have a Date field named "Date1" in Fill-able form and i also have a Field in attachment file named "Date2" , so i want the when i insert the date in main PDF form, it will automatically populate the other PDF form (Attachment file) field with same date