SQL & PL/SQL

HI ALL, When I run the following script gennerated by toad, how do I know it return true or false, toad just tell me Procudre Completed.

Thanks,

DECLARE
RetVal VARCHAR2(200);
NUM VARCHAR2(200);
MSG VARCHAR2(200);
SEQ NUMBER;

BEGIN
NUM := '000628760';
MSG := NULL;
SEQ := 2591314;

RetVal:= ISDONE ( NUM, MSG, SEQ );
COMMIT;
END;