SQL & PL/SQL :: Execute Procedure In Cycle

My need is to execute procedure in cycle. I can run

EXEC zoo.pkg_z184.rep184_fill( date '2011-09-28' );
EXEC zoo.pkg_z184.rep184_fill( date '2011-09-29' );

But I'd like to do it in cycle when the period is much bigger. Here is my try to do it:

begin

for l_row in (
select date '2011-09-27' as arcdate from dual union all
select date '2011-09-28' as arcdate from dual union all
select date '2011-09-29' as arcdate from dual union all
select date '2011-09-30' as arcdate from dual
)
loop
EXEC zoo.pkg_z184.rep184_fill( l_row.arcdate );
end loop;
end;

It returns error:

ORA-06550: line 9, column 6:
PLS-00103: Encountered the symbol "ZOO" when expecting one of the following:
:= . ( @ % ;

The symbol ":=" was substituted for "ZOO" to continue.