If someone is Noelle prosequi do they get released from jail?

If the person's charge/s has/have been Nolle Prossed, then he is released on that charge/s.  However, if the person is being held on multiple charges in a case and only one of the charges was Nolle Prossed, he would not automatically be released since he has other charges that were not Nolle Prossed.  It also is possible that the person is being held on more than one case.  So even if all charges in one case are dropped, he would continue to be held on the other case/s.  Nolle Prosequi means the state is not proceeding on that charge.  In other words, that particular charge has been dropped.