You can try
define Global variable number Timer = 0
define Global variable number Destroy = 0
1.every tick -->> system add dt to Timer
2. On Marbles destroy -->> system add 1 to Destroy
-->> system set Timer = 0
3. Destroy => 4 AND Timer1 < 1 -->> action you want
-->> system set timer = 0
-->> system set Destroy = 0