无法按阵列数据更新字段

I am new in cakephp. I'm trying to update a field record but one field is not updating. What is wrong with my code? Code is below:

if (!empty($data['psetting_id'])) {
  $data = array('id' => $data['id'], 'psetting_id' => $data['psetting_id'], 'custom_package_id' => 0);
}
$this->PackageCustomer->save($data);

When I print this array then view information below :

From this array the following field is being updated: custom_package_id but psetting_id is not being updated.

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