I am compiling this code

BEGIN
declare array arr('it.training@gamma.mu','it.analyst@gamma.mu');
exec apps.gcl_email_handler.send_multiple_email
('it.training@gamma.mu',
'IT DEPT',
arr,
null,
null,
'TEST',
'test multiple email');
END gcl_email_handler;

/


but i received the following errors:
ERROR at line 11:
ORA-06550: line 11, column 20:
PLS-00103: Encountered the symbol "END" when expecting one of the following:
begin function package pragma procedure subtype type use
cursor
form current