Help with knowledge check interaction - stop jumping to next slide on submission of correct answer

Please can someone help, I just can't seem to get my brain to work this out. I'm working on a drag and drop true / false knowledge check and I can't seem to get it to do what i want it to. 

I'm trying to get it so that when the interaction is submitted, and all answers are correct, then the package stays on the slide, displaying all statements in their correct state until the user presses the 'feedback' button to go manually onto the feedback slides (the feedback button is set to initial state of hidden and changes to normal when the state of all drop objects is correct. !!)

When all answers are correct, it keeps on automatically jumping to the next slide. 

(Side note: if any answer is incorrect, the submit button changes to the 'try again' state to encourage the user to move the incorrect answers into the correct columns. We are trying to send a strong message to the learner to realise what is a true or a false statement as much as possible!!! )

Here's the package in review: 

Have attached the source. 


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