Survey , No insert in the table survey_fields

I testing drupal 4.5.2 (and 4.5.0/4.5.1)

After that will send the answer will stored in the survey_response table but not stored the dates of the answer in the survey_fields table.

In the code I found that "$field->name" no value contains.

What can that be due to?

if ($_POST['edit'][$field->name]) {
$responses[$field->title] = $_POST['edit'][$field->name];
db_query("INSERT INTO {survey_fields} (rid, ffid, value) VALUES (%d, %d, '%s')", $rid, $field->ffid, $_POST['edit'][$field->name]);
}

rid and $field->ffid have the right values!
and the mail will send without the values of the answer.

Is this an post/forms.module or php.ini Probleme?

Thanks MN