Switching spline actors at runtime

Hey! Thanks for replying, indeed I haven’t explained how the things are currently working sorry for that! Basically the vehicles follow the “RoadSpline” spline variable, and I just need to set which road spline to follow as in the second picture. As you can see the system is running on tick, I’m using a vehicle and it steer/ accelerate based on the spline
The path is linear, I mean vehicles who reaches the end of a spline, they start by the begin till the end of the next road

I also own a spline asset who have some cool features like sending event across the splines, but I don’t know how to use it with an actor with physics enabled, according to the manual:

"Setting up a follower is all the same in this case except one thing. PFPathComponent controlled components needs to be manually set to those with “Simulating Physics” enabled. "

I’m not sure how to set those components (last pic), making this asset works probably fixes the spline switching question too, please let me know if you need more infos