I don't have time at the moment to do this but you haven't grasped the principle.
For example over LA you need a shape for each of the airports in Asia. Each one triggers the correct arrow. You need to repeat this for all of the other USA airpoint
If you click Hanoi (for example) it needs to trigger all of the USA "Cover Shapes" disapearing EXCEPT the ones from Hanoi. Then when you click any of the US airports the correct arrow will appear. This is how my example works. You would also need to add animations to reset everything. I told you it would be complex!
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