I have the simple query(s)

update salenum
set customernum = 1 + (select customernum
from salenum);
select customernum
from salenum

This work 100% in the interbase interactive sql.
It does not work in TIBOTable.SQL. I assume this is because I cant
have 2 SQL statements per tIBOTable.

Is this true, or is there someting I must set ?