feature extractor

This is a simple question but it's Monday morning so would appreciate help.

 

 

I have a list of features, and one attrbute is between 6-8 characters long.

 

 

I want to rename the attribute with the first 6 characters of their existing attribute (so drop the last two characters where they occur), and remove any features whose attributes are duplicateed due to the new name.

 

 

eg.

 

 

i want to make;

 

 

AB1234AB to AB1234 and only leave 1 record of AB1234 in my output.

 

 

i'm trying in BulkAttributeRenamer but think i may be over complicating it

 

 

cheers