If I select UNIX time, in the option of the field, the FORMAT data is stored correctly into the DB, BUT the value is WRONG.
the following code (in the model or table, it depends by the config of your component in the jcook builder):
// New item.
if (!intval($this->creation_date))
$this->creation_date = $date->toSql();
and
// Existing item
$this->modification_date = $date->toSql();
should be simply replaced with:
// New item.
if (!intval($this->creation_date))
$this->creation_date = time();
and
// Existing item
$this->modification_date = time();
:
