Can you help please?

<?php
/*
Plugin Name: List Columns
Description:
*/

addFilter('listRow_displayValue', '_listRow_displayFileNameForUpload', 'admins');

function _listRow_displayFileNameForUpload($displayValue, $tableName, $fieldname, $record) {
// Specify the specific table and field you want to modify
if ($tableName === 'live_stream' && $fieldname === 'documents') {
if (isset($record['documents'][0])) {
// Reference the field on that record and the first document in that field
// Then replace its display value. Here I am customizing it to be a "badge" style value as well.
$displayValue = '<span class="badge badge-primary">' . $record['documents'][0]['filename'] . '</span>';
}
}
return $displayValue;
}

So you want to advance the publishDate and removeDate by a week for ALL the records in a section?  Is that right? Yes please.

And why do you need to do that?  I'm wondering if there's a simpler solution. So my client doesn't have to go into each record in that section and manually change the date each week.

I have created a plugin file but I'm not sure I've done it correctly or loaded it up to the correct place, nothing has changed but I can see it in the Developer's Plugin Hook List.

Thank you in advance.