Im having problems with random spawning

gmedina.172

Well I assigned a timer to every actor to spawn in a certain randome time, but the thing is that my game is about destroying balls, but you dont need to destroy some kind of balls because you lose points, but if you dont destroy them something strange happens, the actors that are not destroyed star appearing twice the number they start appearing a lot of the same actors, how do i get rid of that problem? I dont want a lot of the actores to be spawned that quickly the ones that aren't destroyed, because that will ruin the game. Can somebody help me out? thank you...