This study can be used to set alerts when a candle closes outside the BBand and the following candle closes inside it. Alert will be generated on the inside candle. Consecutive outside BBand closes won't generate any alerts.
The signals are there to be used for manual trading as more of an alert of extreme price movement to an area of interest where a potential trade might be available.
My recommendation is to use this on HTFs only, 4H or higher.