I did that but it didnt work
I have already found the cheats
1. First go to this website
You must be registered to see the links
2. then upload the save file you want
3.the website will warn you (Your RenPy version has some save protection, to disable find this file \renpy\savetoken.py and replace if token_dir is None: by if True: )
4. Follow the warning (you can open the savetoke.py file in Word)
5. Go back to the website and adjust the parameters of GOLD (money) to how much you want
6. Download the new save file and replace the old save file