How to query by passing an array of items?

Hello All,

Let's say I have a requirement to query SAP tables and I want to pass an array as an input.

Example:- I want to get billing doc. list as output and for that I want to pass two tables as input having columns like let say sold-to, payer, date from, date to..etc.

How to pass these multiple tables as input to Query Operation i.e HTTP Get service ?

I am using SEGW tool and SAP NW Gateway 2.0 sp4.

Thanks

Sandesh