Why can't I see these results in the results grid

Question

If I run the pl/sql below as a script F5 I can see the results of the "select * from TestOutput", but If I execute it with F9 I don't see any results in the results grid. Anybody know why? Thanks in advance for any help.
CREATE TABLE TestOutput (val1 varchar2(50), val2 varchar2(255) , numval1 NUMBER, numval2 NUMBER);
DECLARE
SomeText VARCHAR2(255);
BEGIN
SomeText := 'Hello';
INSERT INTO TestOutput VALUES ('yadayada', SomeText, 1, 1);
INSERT INTO TestOutput VALUES ('yadayada', SomeText, 2, 2);
INSERT INTO TestOutput VALUES ('yadayada', SomeText, 3, 3);
END;
select * from TestOutput;
drop table TestOutput;

Answer 1

I think that you he is executing all the commands of a time, selecting everything and click in F9 or F5.
If he will be this, this behavior is correct.
Ps.:
F5 - scripts.
F9 - alone statements (not to be that they are separate for semicolons).