Web ADI Budget Download/Upload in 11.5.10.2

 Hi,

I am implementing the GL Budget uplaod/download using WEB ADI in 11.5.10.2. Currently, user can select the following parameters:

Mapping:
Organization:
Budget:
Currency:
From Period:
To Period:

This downloads the data for all accounts, regardless they have any balances or not.
Users want to add the Flexfield segment as parameters to these existing parameters so they can limit the data. For ex: they can limit the data using

Region 100 to 700
Dept 1000 to ZZZZ
Acct 700 to 721
Sub 000 to ZZZ
Prd 00 to ZZ
Sat 000 to ZZZ

How do I include the flexfield segment parameters in Web ADIBudget upload/Download process?

Thanks in advance.