I am looking to do a scan for stocks that are at their lowest Bollinger Bandwidth 20 2 value for the last 6 months; 120 days ... please help 

thank you for reading

Add Bollinger Bandwidth indicator to the chart and adjust its settings as desired.

Adding and Moving Indicators (7:19)

Then click on the Bollinger Bandwidth indicator and select Create Scan Condition. You will want to choose New Low and set it to At 120 Bar Low.

Create Conditions from Your Chart (5:25)

You can select Scan in New Window at the bottom of the Create Scan Condition window to create a new EasyScan based on your new condition once you have set it up.

Building a Scan with Multiple Conditions (7:29)

thanks Bruce! .. easier than i thought

You're welcome.