Drag and Drop show layer when state is correct - Does not work!

Hi all, not sure what I'm doing wrong here. Basically I have a drag and drop activity where the user must drag 3 options onto a list. Once they've dragged the 3 correct answers onto the list I want another layer to appear. As far as I can see everything is set up properly.... I have the trigger to show layer once x, y and z state is equal to drop correct but it doesnt work. Nothing happens. If anyone can show me what I'm missing that would be amazing. Cheers!

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