How do I call an effect from action?

[xtreme]

I have added an effect on my player and I want it to appear when the player collides. When I start the game, the effect is shown (which I do not want) and when I collide nothing happens.

How do I run an effect when the player collides? Below is an example with shockwave effect.

[Avram]

Have you tried disabling it at the beginning of the scene? And then enabling it when needed?