>Hi All,
>
>I use some parameters with cursoradapter. When doing requery() if VFP couldn't find the parameter it wants me a parameter. It makes harder to find bug. I want if VFP couldn't find the parameter it occurs an error. Is this possible?

Did you try using Mark McCasland's CABuilder class? If I recall correctly you can trap errors in CursorFill method and his class had some provisions for it.