>VFP have not a
>

> INSERT INTO table DEFAULT VALUES
>

>* APPEND BLANK don't support NULL ( a bug for me )
>
>Then i try to simulate it with a empty object
>
>On next code I expected no errors
>
>

>#DEFINE DEFAULT_VALUES FROM NAME CREATEOBJECT("empty")
>SET NULL ON
>CREATE CURSOR byby (aa i,cc i)
>* HELP: WITH objectName
>* objectName == CREATEOBJECT("empty") no errors
>
>WITH CREATEOBJECT("empty")
>ENDWITH
>
>* HELP: INSERT ... FROM NAME objectName
>* objectName == CREATEOBJECT("empty") error
>
>INSERT INTO byby DEFAULT_VALUES
>

*This code errors:

INSERT INTO byby FROM NAME CREATEOBJECT("empty")

I'm not sure exactly what you're trying to to do.
Can you add your defaults to your create cursor statement.