Well, i wrote to Victorian Commission Gambling Regulation ( VCGR ) regarding the Raffle Draws and here is their responds.
Please be advised that any minor gaming activity such as the conduct of a Raffle may only be conducted by organisations that have been declared as a community or charity organisation by the Victorian Commission for Gambling Regulation.
A permit is required when the total prize pool exceeds $5000. However regardless of the prize pool the organisation must still be declared.
Regards,
Alex