Here then the steps to follow:
1 Go into My City Life
2 Open Cheat Engine and select browser in the process list
3 Tick HEX, Double, Also scan read only mem.
4 Scan your current 'C' coins.
5 Spend some coins, Next scan new coins value until only 1 address left.
6 Double click the address so it appears at the bottom table with [Frozen], [Description], [Address], etc
7 Double click the address again and add '+a8' at the end (example: 1F94DA08+a8)
8 The value will be your current 'K' cash. (example: 5)
9 Important step: Check the 'K' cash price of the Expansion you want to purchase. If it cost 54 'K' cash, you will need to change the value to 59. So when 59-54=5, your original 'K' cash value remains.
10 An error will pop up. But you will also get the 100% loading screen. Just refresh the game after 100% and your land has expanded.
Note: If you did not get the 100%, you did step 9 wrongly. Always remember: Current 'K' + 'K' price of the item you want to buy = 'K' value that you want.
Tools:
Firefox
Flash 10
Cheat Engine 5.5
