Using gform_notification filter based on ACF repeater field value

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I have a form that contains a select menu that is being dynamically populated using custom fields from repeater rows. The dynamic population of the select menu totally works. However, I then want the selection to be tied to a different email address (a custom field in the same repeater) so that the selection determines which email address to send a notification of the form submission.

The repeater name is partners and each row has the following fields:
partners_country, for the dynamic population
partners_email, for the email address that should be tied to that select option and used to send the notification

Below I am going to share the code I’ve used for the dynamic population, which does work. And then the code for the notification filter, which does not work . I am looking for some assistance to make that second block of code do what I want it to do.

What that second block of code is doing is that it it connecting to ACF in that it will send a notification but it’s using the email of that very last row, regardless of which option has been selected in the select menu.

I feel like I’m a few lines of code from this working, but the issue is using $entry to somehow tie the selection to the email address through an array or something.

If it helps, I was trying to reference this code, where someone is doing this based on WP users, rather than ACF fields:

Dynamic Population Code (working)

// Populate GF with ACF Repeater
add_filter('gform_pre_render_1', 'dynamic_populate'); // Where 1  is GF ID
function dynamic_populate($form) {
	foreach($form['fields'] as &$field){     
		if(strpos($field['cssClass'], 'region-field') === false)
		continue;

		global $post;
		$id = $post->ID;
	
		global $wpdb;	
		$rows = $wpdb->get_results($wpdb->prepare( 
			"
			SELECT *
			FROM wp_postmeta
			WHERE post_id = %d AND meta_key LIKE %s 
			",
		$id,
		'partners_%_partners_country'  
		// repeater-name_%_field-name
		));
						
		$choices = array(array('text' => 'Select a Region', 'value' => ' '));
		
		if($rows){
			foreach($rows as $row) {
				preg_match('_([0-9]+)_', $row->meta_key, $matches);

				$meta_key = 'partners_' . $matches[0] . '_partners_country';
				$valueText = get_post_meta($post->ID,$meta_key,true);
				$value = str_replace(' ', '-', strtolower($valueText));

				$choices[] = array('text' => $valueText, 'value' => $value);
			}  
		}
		$field->choices = $choices;
	}
	return $form;
}

Notification Filter Code (not working)

add_filter('gform_notification_1', 'contact_email_notification', 10, 3);
function contact_email_notification($notification, $form , $entry) {
 
	foreach($form['fields'] as &$field) {
		if($field['type'] != 'select' || strpos($field['cssClass'], 'region-field') === false )
		continue;

		global $post;
		$id = $post->ID;
	
		global $wpdb;	
		$rows = $wpdb->get_results($wpdb->prepare( 
			"
			SELECT *
			FROM wp_postmeta
			WHERE post_id = %d AND meta_key LIKE %s 
			",
		$id,
		'partners_%_partners_email'
		// repeater-name_%_field-name
		));

    // $field_id = (string) $field['id'];
		// $post_id = $entry[ $field['id']];

		if($rows){
			foreach($rows as $row) {
				preg_match('_([0-9]+)_', $row->meta_key, $matches);
				$meta_key = 'partners_' . $matches[0] . '_partners_email';
				$email_to = get_post_meta($post->ID,$meta_key,true);
			}  
		}
	}

	if (!empty($email_to)) {
		$notification['to'] = $email_to;
	}
	return $notification;
}