Script for conditional display of i18n text??

Hi, 
 
I am developing a BIRT report that uses XML data source. I pass the path of the XML file as parameter. I need to display a label text (from a i18n resource file) depending on the xml tag attribute value. The XML tag attribute value is not displayed in the report, but is only checked for it's content. 
 
The attribute value is captured as data set in the report. 
 
I am using the following java script in the onPrepare event of the label to be displayed 
<pre class='_prettyXprint _lang-auto _linenums:0'>
var check="";
if (BirtComp.equalTo( dataSetRow["RUN"], "Trial")){
check = dataSetRow["RUN"];
}
return check;
</pre>
 
I am getting the following error 
There are erros evaluating the script......<the above code>!!!!!!!!! 
 
Is this the right way to display a label text on conditional basis? If not please let me know the actual/right way. 
 
Any help will be appreciated. 
Thanks

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BIRT_NEEDY

Hi, 
 
I am unable to access the data set value in the onPrepare method of the label!! the code is 
this.text=dataSetRow["RUN"]; 
 
I have done the binding in the binding editor. 
 
I am getting the following error!! 
org.eclipse.birt.report.engine.api.EngineException: There are errors evaluating script "this.text = dataSetRow["RUN"];": 
 
ReferenceError: "dataSetRow" is not defined. (/report/body/grid[@id="32"]/row[@id="36"]/cell[@id="37"]/label[@id="261"]/method[@name="onPrepare"]#8) 
at org.eclipse.birt.report.engine.executor.ExecutionContext.addException(ExecutionContext.java:1166) 
at org.eclipse.birt.report.engine.api.impl.ScriptedDesignHandler.handleOnPrepare(ScriptedDesignHandler.java:124) 
at org.eclipse.birt.report.engine.api.impl.ScriptedDesignVisitor.visitLabel(ScriptedDesignVisitor.java:270) 
 
Any help will be appreciated. 
Thanks