How to use BAPI_FIXEDASSET_CREATE ?

Hi Expert,

we are using the BAPI_FIXEDASSET_CREATE to create the Assets in SAP. But recently we have enhanced the SAP Standard field transaction AS01 to include some customizing fields. This enhancement is working fine. but i am not able to pass thses customised field thru the BAPI.

My specific question is How to pass the values for EXTENSIONIN table of BAPI for our customizing fields.?

Regards,

Umesh