It's Christmas. 'Papi Jo' has just added new features to his customised H5P Drag & Drop library.
It is now possible to define in the drop zones the quantity of elements to be dragged and dropped, as well as the total value of these elements, if you have defined these values beforehand.
All details and examples on my test site as usual here: http://www.rezeau.org/drupal/
Below is a seasonal illustration.
Happy Xmas!
