destroy actor problem

josh.273

i am making a game similar to brickbreaker. and when you hit a brick it drops a box, when you collect that box it then changes an attribute (game.box) to true, when this attribute is true and collides with another actor it destroys all the actors of that type, it then sets (game.box) to false. however the actors delete fine but they will not respawn again, as i have the actor set to respawn every 30 seconds. please help, im only new to this.