Numbering To All Detail Sections

Hi,

Am developing a report in crystal report from visual studio.

I need a help.

In my report there are so many detail sections.

Example : Every record i divided into 5 parts.

One Record i divided into A,B,C,D and E

every part is in a new detail section.

Now What i need is

Record 1

1 A

2 B

3 C

4 D

5 E

Record 2

6 A

7 B

8 C

9 D

10 E

so on.....

like this i want a serial number beside every detailsection.