I followed the Blueprint Time Attack Racer tutorial, and I want to add checkpoints that change how gravity affects the car. How do I do that?

Here is the tutorial I followed:

https://docs.unrealengine.com/latest/INT/Videos/PLZlv_N0_O1gYdhCvvMKGpCF6LCgBz9XeS/VJj6rQpktyI/index.html

I want invisible collision boxes that can make gravity go up, or sideways, or any direction in general, any suggestions are appreciated but I’m very very new to UE4 so please explain thoroughly.

I found this: Can I change the gravity direction? - World Creation - Unreal Engine Forums a while back but couldn’t get it to work at first but i finally figured it out so if you have the same question please refer to his awesome solution.