Fill Structure BUPA_MAIN

Hi,

I have a requirement where the address informaion of a BP from CRM server is updated to the mobile client. Iam able to update the BP info in CRM using the FM BAPI_BUPA_ADDRESS_CHANGE which is

perfectly doing its job.

Now i want to fill the Central Data segment along with currently filled Address segment of the MBdoc structure BUPA_MAIN. Can anyone tell me how i can fill the Mboc structure? Is there any FM ? or should i pass any parameter to the FM BAPI_BUPA_ADDRESS_CHANGE to generate a MBdoc.