module secret_number;
parameter my_secret = 0;

initial begin
  $display("My secret number is %d", my_secret);
end
  	 
endmodule
 
module defparam_example();
  	 
defparam U0.my_secret = 11;
defparam U1.my_secret = 22;
  	 
secret_number U0();
secret_number U1();
  	 
endmodule