Hello All, It is possible in a oracle sql to select a function which return boolean. here my select: SELECT VALIDATE_BOE.BOEF005('111',1,'cms') from dual; And the sql error: ORA-06552: PL/SQL: Statement ignored ORA-06553: PLS-382: expression is of wrong type 06552. 00000 - "PL/SQL: %s" *Cause: *Action: Error at Line: 1 Column: 8 Regards,