>Hi,
>
>I thought that the syntax:
>
>use in select("alias_name")
>
>is safe from an error. That is, if I test it in the Command window and the "alias_name" does not exist, I get no error.
>
>Yet this morning I saw, during the execution of a long program, error pointing to the same type of line (use in selec...). The error said:
>
>"Table number is invalid"
>
>What could be that would cause an error? TIA.

Try putting parens around the function call:

USE IN (SELECT("alias_name"))

Tamar