Optimze add LIMIT clause to SELECT within a Virtual Procedure using Oracle

LIMIT clause is added to Statement being optimized which fails the operation on Oracle

OPTIMIZE:
CREATE VIRTUAL PROCEDURE
BEGIN
DECLARE biginteger VARIABLES.t_pk;
VARIABLES.t_pk = (SELECT <table>.seq_gen.cpe_seq FROM <table>.seq_gen);
SELECT VARIABLES.t_pk AS result;
END

####################################################
PROCEDURE COMMAND: CREATE VIRTUAL PROCEDURE
BEGIN
DECLARE biginteger VARIABLES.t_pk;
VARIABLES.t_pk = (SELECT <table>.seq_gen.cpe_seq FROM <table>.seq_gen LIMIT 2);
SELECT VARIABLES.t_pk AS result;
END