num1 =69 num2 =2 error = [[ l1, sytanx error the value of num1 is a 'nil' value. ]] error2 = [[ l1, sytanx error the value of num2 is a 'nil' value. ]] if num1 == 0 then print(error) elseif num2 == 0 then print(error2) else print(num1 + num2) -- ^ can change the operator to +, -, * , / if num1 == 69 then print("funny number") elseif num2 == 69 then print("funny number") end end