esx_core/server/classes/addonaccount.lua

function CreateAddonAccount(name, owner, money)

	local self = {}

	self.name  = name
	self.owner = owner
	self.money = money

	self.addMoney = function(m)

		self.money = self.money + m

		self.save()

		TriggerClientEvent('esx_addonAccount:setMoney', -1,  self.name, self.money)
	end

	self.removeMoney = function(m)
		
		self.money = self.money - m
		
		self.save()
		
		TriggerClientEvent('esx_addonAccount:setMoney', -1,  self.name, self.money)
	end

	self.setMoney = function(m)

		self.money = m

		self.save()
		
		TriggerClientEvent('esx_addonAccount:setMoney', -1,  self.name, self.money)
	end

	self.save = function()

		if self.owner == nil then
			MySQL.Async.execute(
				'UPDATE addon_account_data SET money = @money WHERE account_name = @account_name',
				{
					['@account_name'] = self.name,
					['@money']        = self.money
				}
			)
		else
			MySQL.Async.execute(
				'UPDATE addon_account_data SET money = @money WHERE account_name = @account_name AND owner = @owner',
				{
					['@account_name'] = self.name,
					['@money']        = self.money,
					['@owner']        = self.owner
				}
			)
		end

	end

	return self

end