Bug 143671 [Linux-As][Smoke]Parameter can't be used.
Details: [Linux-As]Parameter can't be used. Setp: 1.New a report design. 2.New a paremeter. 3.Preview and click Run Report Parameter. 4.Dialog pop up and press OK. Actual resutl: Report error.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/context/ViewerAttributeBean.java
*/
	protected void __initParameters( HttpServletRequest request )
			throws Exception
	{
		this.reportDesignHandle = getDesignHandle( request );
		InputOptions options = new InputOptions( );
		options.setOption( InputOptions.OPT_REQUEST, request );
		options.setOption( InputOptions.OPT_LOCALE, locale );
		options.setOption( InputOptions.OPT_RTL, new Boolean( rtl ) );
		
		Collection parameterList = getParameterList( );
		
		if ( isDesigner )
			parseConfigVars( request );
		
		this.parametersAsString = getParsedParametersAsString( parameterList,
				request, options );
		
		this.parameters = (HashMap) getParsedParameters(
				this.reportDesignHandle, parameterList, request, options );
		
		Collection parameterDefList = this.getReportService( )
				.getParameterDefinitions( reportDesignHandle, options, false );
		
		this.missingParameter = validateParameters( parameterDefList,
				this.parametersAsString );
	}
	/**
	 * parse paramenters from config file.
	 *