[Plugin: Another WordPress Meta Plugin] how to fix undefined index awmp_edit line 142

to fix: undefined index awmp_edit line 142
change line 140

from: $awmp_edit = $_POST["awmp_edit"];

to:

if ( isset($_POST["awmp_edit"]) )
          $awmp_edit = $_POST["awmp_edit"];
       else
          $awmp_edit = '';

http://wordpress.org/extend/plugins/another-wordpress-meta-plugin/