How to set a default date to date field in Config Item?

[Sophy978]

Hello, I am using a date field for one of my Config class, please see example below. Is there a way to set the default date to null or something equivalent like 00/00/000 (mm/dd/yyyy)?

{
Key => 'ContractStartDate',
Name => 'Contract Start Date',
Searchable => 1,
Input => {
Type => 'Date',

},
},