Thaks you very much for both scdecade and Jeff Moden, I aprecciate very much your help.

This is exactly that a need . In a future I'll document better my posts

Greetings

Madrazo.

Thahks I was searching on the Web and found this solution and and the problem was fix. This is solution using DAO:

Dim db As dao.Database

Dim tdf As dao.TableDef

Dim clave As...

Thanks you. Now It's work fine.

I appreciateso much your solution. Now I can resolve the trouble I had have and I can continue with my work.

Greetings,

Arsenio.

Thanks for your reply. I have run the sript but I get this error "Error in ALTER TABLE DROP COLUMN.The column 'SSMA_TimeStamp' not exist in table 'Doctors'. I had...