Instead of Comprueba = (SELECT "Usu_ID" FROM "Users" WHERE LOWER("Usu_Nick") = LOWER(xUsu_Nick) );
use SELECT "Usu_ID" INTO Comprueba FROM "Users" WHERE LOWER("Usu_Nick") = LOWER(xUsu_Nick) Rick ---------------------------(end of broadcast)--------------------------- TIP 6: Have you searched our list archives? http://archives.postgresql.org