MOVEX - how to add new year SO invoice series no

Hi, wondering how to add new series number for service invoice ?

Here are the steps :
1.Check out SOS010 service order type for the series number used  Eg..301 order type
2. Then go to MFS165 for new year running number by duplicating last year for current year
3.Once done, you may generate invoice on sos180 for the new calendar year ..