Spawning an actor at same location as another actor

I'm making a game with a ninja who throws a smoke bomb, but I can't for some reason make the bomb go off at where the ninja is. The bomb is a sensor, so they are not colliding.. Any suggestions on what I should do? Btw I am still a complete dumbass at stencyl, so it is possible I just made a beginner mistake 

Did you attach the behavior to the ninja?