EXECUTE BLOCK
RETURNS (
  OUT_TXT BLOB SUB_TYPE TEXT
)
AS
  DECLARE FUNCTION REPLACE_BY_REG (
    TXT BLOB SUB_TYPE TEXT,
    STR_SEARCH VARCHAR(150),
    STR_REP VARCHAR(150))
  RETURNS BLOB SUB_TYPE TEXT
  AS
  DECLARE F VARCHAR(150);
  BEGIN
    F = SUBSTRING(TXT SIMILAR '%#"' || S || '#"%' ESCAPE '#');
    RETURN REPLACE(TXT, F, R);
  END
BEGIN
  OUT_TXT = REPLACE_BY_REG(
'
RIGHT=345345
LEFT=34
TOP=11
',
  'LEFT=[0-9]*',
  'LEFT=1'
  );
  SUSPEND;
END