Sorry,in the example above,schemasetter will have some additional attributes from SchemaMapper output,and I found that SchemaSetter can not be obtained according to the original attribute of sequential access to schema feature,so I also constructed a working space.It does not use SchemaSetter.
If you use SchemaSetter (a custom transformer in FME Hub),you will only need to have a table that contains the original field name and the name of the field after the change,you can achieve the desired purpose.