hi Chuck/Martin

The idea is to develop a small program to run on the client's site to add / modify fields of the DB (SQL).
I solved it using the sentence:

Move "MSSQLDRV: dbo # customer @ SERVER = DFCONNID = MFXXXXXXID" to sConecta

Which comes with the help of DF, replacing "customer" at run time with the table to be modified.

the fields to be modified would be in a native table with its description and table to be altered.

thanks for your attention

Edgar