I want to create two element's pile like answers item. Theses piles are infinite and only one item can be drag'n drop on 1 area. Areas can be receive each type of item but only 1 is good (and the validation doesn't depend to element but type of element)
there is a attachement for a good comprehension of my problem.
Can i have help please :) (i'm french, so i have an average english)