[Plugin: Custom Upload Dir] notice error messages appear

I was editing a theme, and I noticed that the custom upload dir plugin was throwing some notice messages about undefined indexes. After looking at the code on line 69, it looks like the $POST variables might need to be surrounded by !isset()

Notice: Undefined index: Upload in C:\xampp\htdocs\wordpress\content\plugins\custom-upload-dir\custom_upload_dir.php on line 69

Notice: Undefined index: html-upload in C:\xampp\htdocs\wordpress\content\plugins\custom-upload-dir\custom_upload_dir.php on line 69

Notice: Undefined index: Upload in C:\xampp\htdocs\wordpress\content\plugins\custom-upload-dir\custom_upload_dir.php on line 69

Notice: Undefined index: html-upload in C:\xampp\htdocs\wordpress\content\plugins\custom-upload-dir\custom_upload_dir.php on line 69