Number sequence

Hi All ,

AX 2012 R3 

The requirement is regarding the Alphanumeric number sequence .

Client wants have the number sequence format such as 

Company - Constant - Alphanumaric

GE  - SO  - AAAAA111111

Assume that if the number reaches to GE  - SO  - AAAAA999999 ,then system should generate the next number sequence such as GE  - SO  - AAAAB100000....again when it reaches to AAAAB999999, then next number should be AAAAC100000....

I heard the above requirement is possible in AX ..Could any one guide me the how to setup ?

Thanks in advance