I am using the Python Script generator. I insert just 2 possible values.
return ["VAT", "Zero"]
All seems fine in the preview screen. After navigating among the other columns in the same table, I return to this column and the Python Script blanks out and the values in the preview screen turn to NULL. This also happens if I stick to the default sample code provided.
I have successfully used this method elsewhere in my project. So something is effecting this functionality. I have closed and re-opened the project as well.
Any advise/guidance would be appreciated.