I have a field **start\_date** that will assume the current timestamp when the data is saved(not updated). The behavior like this:

```
$this->addBehavior('Timestamp', [
    'events' => [
        'Model.beforeSave' => [
            'start_date' => 'new'
        ]
    ]
]);

```

But I think is not filling with the current timestamp because I'm getting this error:

```
'start_date' => [
    (int) 0 => 'This field is required'
]

```