Rotating curtain panels - old topic resurrection

In attempt to work through Vicram’s script, as a practice;

http://dynamobim.org/forums/topic/rotating-curtain-wall-panels/

I receive null values for ranges. I am unable, therefore, to rotate any of the panels. Can anyone assist with this, please?

The old post is closed for comment, so I cannot add to that one.

Many thanks

Can you please post a screen capture of your DYN with the error messages? That will help.