How to add range the query of the contract class in D365 code.

how to add range the query of the contract class in D365 code.

how to add range the query of the contract class in D365 code.

 private void initQuery(Contractclass _contract)
    {
        query   = _contract.getQuery();
        wmsQBDS = query.dataSourceTable(tableNum(inventtable));

        QueryBuildRange      errorRange = wmsQBDS.addRange(fieldNum(inventtable, Isopen));

        errorRange.value(queryValue(NoYes::No));
        errorRange.status(RangeStatus::Locked);

        QueryBuildDataSource QBDS =

       QBDS.addDataSource(tableNum(NewTable));
        wmsHeaderQBDS.relations(true);
        wmsHeaderQBDS.joinMode(JoinMode::ExistsJoin);
        SysQuery::findOrCreateRange(wmsHeaderQBDS, fieldNum(NewTable, Newfield)).value('newrange');
   
    }
Please note that NewTable needs to have a relation with the InventTable or else you will also need to add a new relation.