RUN AS LOCAL SYSTEM USER.
1. GIVE THE TIME IN TIME PARAMETER IN SECONDS for eg., if you want to give 10 minutes then give 600. the datatype should be integer.
2.give 0 in options if you want to create shutdown at specific time.
if you already created a shutdown for a specific time but now you want to shutdown the system after 1 hour then just give 3600 in time parameter and give 2 in the v parameter.