使用quantstrat进行多时间帧策略的正确方法是什么？

Here is an example of a multi-timeframe strategy I'm working on with quantstrat. Is this the correct way of doing a multi-timeframe strategy or am I doing it all wrong? I haven't come across any other examples doing multi-timeframe in the quantstrat demos or from googling. Here is an example of a multi-timeframe strateg