Bollinger Bands with Heikin-Ashi (Weekly) and Signal

前天

write a pine script code for bolinger band with 20,1
use hikenashi candles in weekly time frame
Red Hiken ashi candle below Lower Bolinger band
and high of the red hiken ashi candle should not touch the lower bolinger band
if the above conditions satisfies then i need green buy signal on the next green hiken ashi candle

前天

發行說明

A green "BUY" signal will only appear when:

Any red Heikin-Ashi candle is below the lower Bollinger Band.

The next candle is a green Heikin-Ashi candle, and it is still below the lower Bollinger Band or it can touch the lower bolinger band