BAPI_ADDRESSCONTPART_CHANGE

Hi Friends,

I need to do a mass update of contact person telephone number and extension in R/3. I tried doing it thro' XD99 but extension number cannot be updated by this.

So later I found this BAPI " BAPI_ADDRESSCONTPART_CHANGE"

can this be used ? and please give me sample input parameters ?

Thanks a lot in advance,

Veena