Make cake as directed on mix using 9x13 pan. Immediately after taking it out of the oven poke holes over the entire cake. Then pour the condensed milk over the cake. After the milk is soaked into the cake pour on 1/2 to 3/4 of the jar of ice cream topping over the top. When the cake is completely cooled spread cool whip over the top. Then sprinkle the candy pieces on top of cool whip.