function addCustomField($label, $type = 'text', $default = '') {
	$customFields = tribe_get_option('custom-fields');
	$fieldExists = false;

	// Check in case the "new" custom field is already present
	foreach ($customFields as $field) {
		if ($field['label'] === $label)
			$fieldExists = true;
	}

	// If it is not, add it
	if ($fieldExists === false) {
		$index = count($customFields) + 1;

		$customFields[] = array(
			'name' => "_ecp_custom_$index",
			'label' => $label,
			'type' => $type,
			'values' => $default
		);

		tribe_update_option('custom-fields', $customFields);
	}
}


addCustomField('Past and present members of Star Trek in attendance');