If I have this list, How can I:
- Delete null value
- Group all yes-yes value
- Group all not-not value
- Group lists with more than two values
I apologize for the disturb.
Thanks a lot

If I have this list, How can I:
I apologize for the disturb.
Thanks a lot

Hi Alberto,
For Group yes/no use groupbykey node:

For deleting null values there are lot of methods, you can use code block or “LunchBox” Remove null values node.

thanks a lot, I tryed and I would like to know if it possible create like 4 list with
Thanks a lot

Remove Connection between get parameter values and List.containsItem.

Amazing, and if I would like to have only yes-yes value and not the other for example, have you got any ideas?
I am out of my CPU (Computer)![]()
Alberto, the blank values are mostly empty strings, not nulls. That issue might need to be addressed.
File: yes-not.dyn

Vikram you save my life another time, really thanks, you are like a genius.
Thanks everyone. Go dynamo!!!