Bollinger Band strategy requirement

Streak - backtesting
1

Please help me to create this strategy:
Candle: Heiken Ashi
Tf: 15 mins
Instrument: Nifty ATM PE

Entry condition(check on spot chart)

  1. Close crosses below the upper Bollinger band with a red candle.
  2. Stochastics should cross below 90
  3. Difference between upper bolinger and lower bolinger band should not less than 2.5%.
2

@trade4lyf Check out the below image to learn how to create the conditions:

image
image1534×1555 131 KB