When I was laidoff, I applied H-4 under my wife's H-1B

(My son was H-4 under my previous H-1B.) When I applied H-4, my son was the 受益人 so that I said $300 for applying an independant H-4 under my wife's H-1B.

Simply speaking, the laws says that if I were a H4, my son can be my visa dependant. (for saving $300 bucks application fee).