Inquiry Mail sending issue

Dear gurus,

I have an issue in getting the inquiry number,

Scenario:

When user is completed entering data in 'VA11' screen, Thereafter on save of the document a mail needs to be triggered.

Now that is achieved and I am able to trigger the mail on save of inquiry successfully, but issue was with mail body.

In mail body we want to send the message like

Inquiry Number <newly created Inquiry number> created successfully.

While saving the Inquiry I am not getting the newly proposed inquiry number..

Is there any way to get this done.?? Please suggest.

Also, I want to tell that the mail sending code has been incorporated in MV45AFZZ User Exit  USEREXIT_SAVE_DOCUMENT which trigger on Click of Save button on VA11.

Regards,

Pavan G