[TYPO3-project-formidable] Problem with dates before 01-01-1970

[Paweł Bandura]

Hi

I need to store in the database dates fo birth and some of them are 
earlier then 01-01-1970.
When I use rdt:DATE, it doesn't save dates before 01-01-1970. Does 
anyone knows how to solve this?

Regards
Paweł Bandura