Bug 140534 [Smoke]Can't changed the value of parameter use show report parameter
Details: [Smoke]Can't changed the value of parameter use show report parameter Step: 1. New a parameter. 2. Change display type to list box. 3. Insert some value into selection value and set the first value to default value. 4. Drop the parameter inro layout 5. Preview and press show report parameter, change the value and press OK. Actual result: The value can't be changed.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/context/BaseAttributeBean.java
{
			this.exception = e;
		}
	}
	/**
	 * Template init implementation.
	 * 
	 * @param request
	 * @throws Exception
	 */
	protected void init( HttpServletRequest request ) throws Exception
	{
		this.locale = ParameterAccessor.getLocale( request );
		this.__init( request );
	}
	/*
	 * Prepare the report parameters
	 */
	protected void __initParameters( HttpServletRequest request )
			throws Exception
	{
		IViewerReportDesignHandle design = getDesignHandle( request );
		InputOptions options = new InputOptions( );
		options.setOption( InputOptions.OPT_REQUEST, request );
		options.setOption( InputOptions.OPT_LOCALE, locale );
		Collection parameterList = this.getReportService( )
				.getParameterDefinitions( design, options, false );
		
		this.parameters = (HashMap) getParsedParameters( design, parameterList,
				request, options );