How to remove default value on field

I’ve got a yes/no field with default = “false”.
I want to remove the default value, so that there is no default for that field, because I need it to evaluate as empty if it’s empty.

But I can’t remove the default value because the dropdown only has two options, no “blank” option, and there’s no button to clear the default. @emmanuel

For yes/no, empty or no is the same thing.

Oh, so there’s no way for a yes/no to evaluate to “not yes and not no”?
I was assuming I could use empty to mean the user hadn’t filled it out yet.

You’re right, sorry. We don’t expose the empty option, though if you open the dropdown and press backspace it should empty the content.