title: zkemkeeper SetUserInfo isn't working
body: <p>I want to create new user for the device through zkemkeeper.SetUserInfo(). However when I tried to use this function It always return False and when I look into the error code it said -2, Which means ERROR_IO. Anyone knows how to fix this thing or What could be the cause of this error ?
  Here is my code</p>
  
  <pre><code>zk = Dispatch("zkemkeeper.ZKEM")
  result = zk.Connect_Net(IP, PORT)
  if result == True:
      result = zk.SetUserInfo(machineNumber, 456, "DEFG", 0, 0, True)
      print(result) #it always false here
      erroCode = zk.GetLastError()
      print(erroCode) # -2
      disConnectDevice(zk)
  </code></pre>