>Renato,
>
>The arguments for table and tag in SEEK() need to be passed as character strings. seek( key, "table", "tagname" )
>

Ok thanks to all, but I'm not asking about syntax.
I'm talking about a strange problem that it's hardly to verify (a syntax error if exist it's always present). The application run well almost of time but sometime that code fail. In my SEEK() I haven't variable for tag or table I use your syntax ( seek( key, "table", "tagname" ) ) .

Any ideas ?