Good question. I didn't create the indicator, it's from the TV community. I wouldn't take a trade only on divergence. Looking for confluence of multiple indicators and also use as a warning a warning not to trade against it. Also, the first Demark after breaking through a cycle to the upside with authority is usually the end of wave 3.  

That divergence indicator also does work well on 1 min and below time frames for scalps... kind of surprisingly.