How to use ConditionalStyle in Crosstab header cell

[dpriya.pratheep]

How to use conditional style in crosstab header cell

I use usbdataset to display values in crosstab

 

<style 

name="Background_Style"

isDefault="false"

>

 

<conditionalStyle>

<conditionExpression><![CDATA[new Boolean($V{forecast}=="true")]]></conditionExpression>

<style 

isDefault="false"

mode="Transparent"

backcolor="pink"

>

</style>

</conditionalStyle>

</style>

 

where $V{forecast} is from 

 

<subDataset name="summaryDataSet" >

<field name="Month" class="java.lang.Integer"/>

<field name="forecast" class="java.lang.String"/>

</subDataset>

 

In crosstab 

<cellContents mode="Opaque" style="Background_Style">

 

If i use

<conditionExpression><![CDATA[new Boolean("true"=="true")]]></conditionExpression> It is working fine with attached screen shot. 

How can use variable forecast from subdataset to style ?

Read somewhere that subdataset variable can not accress outside ..If so how can do ?

 

Any help or link to tutorial is higly appreciated.