How do you get the most Bells in the game

With this code you get lots of weeds:first open your DS and go to animal crossing then check your pockets where your money is and be sure that you empty all your money to the town hall then save close your DS and open it again go down where the small DS is and click on it go where the clock is and click it go to the top where you change the date and the year and go to 2099 press confirm and close your DS and open it again then go to animal crossing and open your mail box and you will have a letter that it says you earned 99.000Bells do it lots of times and you will become a millionair