UnioAntiTradeBug

EDIT 2: People found out a new way to do this bug. So i recoded the plugin.
EDIT: Problem solved with TradeMe 5.1.4.4. If you use higher version than that this plugin is unnecessary.

About bug:
If players can send their money to other players while trading (it is possible with hacked clients) they can use the old money in Trade. For example when player "A" is trading with player "B", player "C" sells some item to his ChestShop sign and he will be out of money. "A" still can send the money to "B" with TradeMe even if he has no money.

Old description:
Simply players can use commands with hacked clients while trading. So firstly they raise the money offer and sending all their money to someone else with /pay command. After player has no money he still can accept offer and perform the trade. Money will duplicate with this way.

What Does This Plugin Do?:
This plugin cancels the trade if Trade opponents' money changes.

Installation:
Download UnioAntiTradeBug.jar and drag it to your plugins folder. Make sure you have at least TradeMe 5.0. Also this plugin depends on Essentials Economy.