batch cmds with wait

[BodduSatya]

Hello Everyone,
can anybody help me to full fill following requirement

/yowsup/yowsup/demos/cli/layer.py

def sendMessageAndDisconnect(self, credentials, jid, message):
    self.disconnectAction = self.__class__.DISCONNECT_ACTION_EXIT
    self.queueCmd("/login %s %s" % credentials)
    self.queueCmd("/message send %s \"%s\" wait" % (jid, message))
    self.queueCmd("/disconnect")
    self.startInput()```

in message send wait is not working.

Actually my requirement is , execute the batch cmds with wait until the previous command finish the execution / set the timeout for each command.

In the above code "/disconnect" command should wait until the "/message" command to finish the execution.