Any child who is arrested and held in a detention center, an alternative detention center or a police station or courthouse lockup prior to the disposition of a juvenile matter shall, if subsequently adjudicated as delinquent by the Superior Court and sentenced to a period of probation supervision or probation supervision with residential placement, earn a reduction of such child’s period of probation supervision or probation supervision with residential placement, including any extensions thereof, equal to the number of days that such child spent in such detention center or lockup.

The plain language of section does not provide credit for predisposition detention when a juvenile offender is ordered committed to a period of confinement. 136 CA 373.