update data provider queryspecification wiith columns from multiple tables

Hi

I have scenario like I need  updated a queryspecificaiton with columns from multiple tables

1. Ex:

  <bOQuery name="Query">

          <resultObjects identifier="DS0.DO1" name="A$Application_ID"/>

          <resultObjects identifier="DS0.DO2" name="A$Column_Name"/>

:

A$Application_ID is from Table A and A$Column_Name from table B

The query is not adding to dataprovier when I am trying to updated from REST API.

Please help me.

Thanks

Kalyan