Particles system attract by actor(s)

Hello everybody,

I’m actually developping a project who need particle attraction by actor(s) when you fly through the collision sphere of the particle system actor BP.

But after some search on the Epic UE4 documentation and forums about Cascade Attractors and BP,
I can’t find the right way to attract my particles by the player.

I already tried to expose some vector param of point vector to BP but when I plug player coord vector, nothing append at play.

47007-particlesystem_attractorparam.png

Is there a way to move particle over lifetime from source location to player location with Locations modules and a lerp in BP ?

I realise that if I increase the range and the strength, it work, but how can I kill particles when they touch the player actor ?