Adding new field

I’m trying to create a hidden field in g-forms, for a date.

I either create a single line text field, and mark it as hidden, or I create a hidden field, in either case, I name the label “Date” and set a default value of “{date_mdy}”.

Then I create a column in the sheet with the header “Date”.

When I submit the form, that column is always blank, while all other columns work.

I’ve un-hid the field, to make sure the default value is working, and unhid it still won’t post.

I get nothing in the debug log, and don’t see a way to enable.

Please advise