Numbering Divisions inside Appendix Page with A.1,B.1 instead of 1.1 sequence

Dear Users ,

I have my appendix element after body element. The numbering of Appendix Title should be A  (i.e A.AppendixTitle ) and the divisions inside Appendix should be A.1 ,A.2 ,B.1 ... respectively.

I am able to bring the Appendix Title to show 'A' using the "Details Numbering -> start with A,B,C... " . I am not sure how to achieve A.1,B.1 .. for the Division inside Appendix.

Pls help

- Sriram Rammohan