How get spline overlapped

Development Programming & Scripting Blueprint
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1

I’m very new in Unreal Eng.
I try to create Blueprint Actor that will follow any spline when overlapped it
My spline path is blueprint with spline
How get spline from OnComponentBeginOverlap => Overlapped Component => (what search in menu?)

2

I haven’t used splines before, but this seems relevant: Spline line component collision?