Thanks a lot Bruce.
 

BR

Bruce, you're absolutely right of course. I use the default numbers, the Bollinger Band 20, 2.00 with the 20 being a simple moving average. The moving average of price should be either 50 or 200, not 20 as I mistakenly wrote earlier.

Your correction reminds me that I use the 50 and 200 period simple moving averages. So  if possible I would like to scan for either the 50 or 200 daily moving average crossing from below to above the lower Bollinger band OR the 50 or 200 daily moving average crossing from above to below the upper Bollinger Band.

I assume that the daily formula will translate seamlessly to the 30 minute and weekly timeframes.

Thanks for your patience.

BR

Bruce, it's the SMA of price crossing up above the lower BB.

Similarly, what would the formula for the 20 SMA crossing down across the upper BB look like.

Sorry for the lack of clarity.

Thanks.

BR

How do I create a PCF to scan for a 20 day SMA crossing up across a 20/20 Bollinger Band either 5 days ago or 4 days ago?

Thanks a lot.

BR