register

-- ARGUMENTS
-- name:     string
-- callback: function (
--               source:   number,
--               callback: function,
--               any:      ...
--           )

-- RETURNS
-- nil

ti.callbacks.register("getMoney",function(source,cb,accountName)
  print("Get account money")
  
  -- It's imporant to handle error cases correctly here,
  -- otherwise you may be blocking a client script from continuing.
  -- NOTE: This is not a "bug", this is the intended behavior of sync callbacks.
  
  if type(accountName) ~= "string" then
    return cb(0)
  end

  cb( ti.players.getAccountMoney(accountName)  )
end)