How to keep orignal name of column if rename field is empty

sgnarkhede2016sgnarkhede2016 Member Posts: 152 Contributor II
I want to rename only few attribute names  from all attributes
I have two column "Name" and "Rename"
Name       Rename
Sachin      Sachin N
Abhay        ?
Jay            Jayesh
Ankita        ?

I want to keep same name if rename is "?"

How to achive this in rapidminer


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