Here, try this, maybe it'll inspire you.
<report xml:lang="en-ca" xmlns="
http://developer.cognos.com/schemas/report/1/"><!--RS:1.1-->
<layoutList>
<layout>
<pageSet>
<page name="Page1">
<pageBody><chart refQuery="Query1_chart">
<chartBody/>
<title render="false">
<text/>
</title>
<subtitle render="false">
<text/>
</subtitle>
<footer render="false">
<text/>
</footer>
<legend>
<itemTruncationText>
<text/>
</itemTruncationText>
</legend>
<axis axisPosition="X">
<labels/>
</axis>
<categoryItemTruncationText>
<text/>
</categoryItemTruncationText>
<axis axisPosition="Y1">
<labels/>
</axis>
<columnChart depth="0" standardType="standard"/>
<chartLevel refLevel="EmployeeID"><queryItemRef refItem="EmployeeID"/><chartText><queryItemRef refItem="EmployeeID" content="label"/></chartText></chartLevel><chartMeasure><chartText><queryItemRef refItem="Revenue LOW" content="label"/></chartText><member refMember="Revenue LOW"/></chartMeasure><chartMeasure><chartText><queryItemRef refItem="Revenue HIGH" content="label"/></chartText><member refMember="Revenue HIGH"/></chartMeasure></chart>
</pageBody>
</page></pageSet></layout>
</layoutList>
<modelConnection name="/content/package[@name='Northwind']/model[@name='model']"/><querySet xml:lang="en-ca"><BIQuery name="Query1"><cube><factList><item aggregate="none" refItem="Revenue LOW" isHeader="true"/><item aggregate="none" refItem="Revenue HIGH" isHeader="true"/></factList><dimension name="EmployeeID"><level name="EmployeeID"><item aggregate="none" refItem="EmployeeID" key="true" isHeader="true"/></level></dimension></cube><tabularModel name="Tabular Model1"><dataItem name="EmployeeID" aggregate="none"><expression>[Report one].[Employee region].[EmployeeID]</expression></dataItem><dataItem name="Revenue LOW" aggregate="total"><expression>IF(TOTAL([Report one].[Orders Facts].[Revenue])<80000)
THEN([Report one].[Orders Facts].[Revenue])
ELSE(0)</expression></dataItem><dataItem name="Revenue HIGH" aggregate="total"><expression>IF(TOTAL([Report one].[Orders Facts].[Revenue])>=80000)
THEN([Report one].[Orders Facts].[Revenue])
ELSE(0)</expression></dataItem></tabularModel></BIQuery><BIQuery name="Query1_chart"><cubeReference refQuery="Query1"/><summary><dataCells><item refItem="Revenue LOW"/><item refItem="Revenue HIGH"/></dataCells><columnEdge><level refLevel="EmployeeID"><item refItem="EmployeeID"/></level></columnEdge><rowEdge><cellMembers/></rowEdge></summary></BIQuery></querySet></report>