Dear Author, please see pic, I want to ask which alert to set when engulfing candle close outside the zone? 

is such a feature option available to send alert when candle englufing close outside the zone if not please add in next update ok? It is a very important feature so we save alot of waiting time see above please add ok?

Hello, we can not add alerts when certain candles appear, candle detection is not the purpose of this indicator. (and by the way, the picture you have shared it's not an engulfing candle).
However, adding an alert when we close outside the zone may be a good feature, so we may consider adding it in the next updates.