c# - Unity 2D particle collision not getting event -

when turn on particle system in 2d game, , check collision button in inspector window, expect event on-particle-collision, never happens!

i added thing named worldparticlecollider, also, no collisions.

i have tried adding worldparticlecollider enemy(just no reason), , sure did not work.

screenshot:

why ?

according question @ unity forums onparticlecollision may not support 2d games now.

according unity roadmap, feature available unity 5.3 (dec 8, 2015).

maybe can use 3d collider 2d game.

remember collider cannot trigger!