BUY or SELL or WAIT

The input parameter counted_bars determines on how many bars the indicator lines will be visible.

The input parameter barsNum is the period for bands calculation.

• When PriceClose for previous bar is above upper band a Long position may be opened.
• When PriceClose for previous bar is under lower band a Short position may be opened.
• If the current Price is between bands it is time to wait.