Line renderer

[Jake]

I'm not good with programming that why i'm using playmaker

i just want to create a effect like this

If I understand you right you want to use Curvy with Unity's builtin ParticleSystem - that's fine, but then you'll need to code or make someone code it. There's "only" a Magical Box addon available that let's you sync Magical Box Particles with Curvy in various ways. Set the FollowSpline parameter's options like I said and the particles will straightly follow a Curvy Spline. Docs for this parameter are here

Or did I understand you completely wrong?