In form view, bug in "element folder" plugin shows PHP Notices

[agilare]

In my Joomla 3.8.10 and Fabrik 3.9, editing a record with an element folder plugin shows a list of :

Notice: Undefined variable: folder in /home/clients/81540dfc4fa3a424b7cdb5d4215dd3c3/dev/plugins/fabrik_element/folder/folder.php on line 74

Maybe a simple copy-paste error plugins/fabrik_element/folder/folder.php here in line 74, where :

				if ($selected === $folder)
				{
					$aRoValues[] = $folder;
				}

should be

				if ($selected === $file)
				{
					$aRoValues[] = $file;
				}

?