When you change the capitalization, the transformation is immediately added to the transformation script. There is no configuration, and the change always overwrites the selected attribute.
To change the capitalization of String values:
In the Catalog, select a project.
Select Transform.
Locate an attribute that contains values you want to modify and select the column.
Choose any of the following:
To change the value to be all uppercase, select Basic > Uppercase .
To change the value to be all lowercase, select Basic > Lowercase.
To change the value to use title case, select Basic > Titlecase.