Can one get multiple visa on arrivals in a given time period. What I mean is... if one arrives in Indonesia, gets a 7-day VoA, then leaves to a neigboring country (SIN or KUL) before the 7 day VoA expires... then comes back to get a 30 day VoA and leaves, let's say on the 28th day... Is this allowed? I read that VoA can only be given for a maximum 30 days. I'm not sure whether or not leaving and coming back resets the 30 days.

Thanks