In versions prior to 4D v6.5, the naming of field was static. A modification of a table or field name implied the manual updating of all the forms. In version 6.5, table and field names can be placed so that they are dynamic. Rename the table or field in the structure editor and the new name will be displayed.
To do this, choose the automatic creation of the dynamic naming when creating the form in the Advanced menu of the New Form wizard.