We have a metadata field which is formatted as month/day/year (ie 2/17/2017).  We want to set up a default naming convention for Snapshot using that field, but they would like it displayed year-month-day (2017-02-17) when Snapshot saves the document.

I know the built-in current date token of %(Date) can be formatted, such as with %(Date;"yyyy-MM-dd").  However, I cannot get a metadata field token to be able to use a format.  It will not give an error, but everything I have tried ends up using the format of the metadata field or else is interpreted as a string.

For example, if my metadata field "Closing Date" is set up month/day/year and has a value of 2/25/2017, below is what I get for each format:
%(Field:[Closing Date];"yyyy-MM-dd") gives me 2/25/2017.
%(Field:[Closing Date];"yyyy") gives me 2/25/2017.
%((Field:[Closing Date]);"yyyy-MM-dd") is treated as a string.
%(Field:[Closing Date;"yyyy-MM-dd"]) is treated as a string.

Is it possible for Snapshot to accept a format for a metadata field, or will it always just use the format of the metadata field?