Advance to the next slide after a drag and drop

Help me please! I'm trying to advance to the next slide after a drag and drop interaction on the condition that all of the images have been dropped correct (therefore the learner has gone to the correct layer and come back to the base slide in 6 situations.) On the trigger list, the slide trigger comes before the object triggers, I would like to try switching the order, but the blue arrows don't show. Is this the correct way to go about this? Should I have done some sort of variable instead?

Thank you!!!

Jordan