Is there a way to get the result of a drag and drop interaction (correct or incorrect)?

I think I'm close to a solution:

I found out that you have a built in variable called Question.correct to get the result of a quiz (and hopefully this includes a Drag and drop interaction).

I added the triggers as can be seen in the attached screenshot. The triggers seems right to, me but somehow, it still doesn't work (the layers are not shown). Does anybody see what I do wrong?

I looked for an example here on the forum, but couldn't find it.