Help me in solving PLSQL05 problem

help
,
1

My issue

Please help with this problem its showing Wrong Answer: Failed on a hidden test case.

My code

DECLARE 
  num1 NUMBER := 10;  -- Declare num1 and assign a value of 10
  num2 NUMBER := 20;  -- Declare num2 and assign a value of 20
  num3 NUMBER;        -- Declare num3 to store the sum of num1 and num2
BEGIN
  -- Calculate the sum and store it in num3
  num3 := num1 + num2;

  -- Output the result to the console
  DBMS_OUTPUT.PUT_LINE('The sum of num1 and num2 is: ' || num3);
END;
/

Learning course: Database management systems
Problem Link: Sum of 2 numbers in Database management systems