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/presentation/aggregation/parameter/ComboBoxParameterFragment.java
* Fragment help rendering scalar parameter.
 * <p>
 * 
 * @see org.eclipse.birt.report.presentation.aggregation.BaseFragment
 */
public class ComboBoxParameterFragment extends ScalarParameterFragment
{
	/**
	 * Protected constructor.
	 * 
	 * @param parameter
	 *            parameter definition reference.
	 */
	public ComboBoxParameterFragment( ParameterDefinition parameter )
	{
		super( parameter );
	}
	protected void prepareParameterBean( HttpServletRequest request,
			IViewerReportService service, ScalarParameterBean parameterBean,
			Locale locale ) throws ReportServiceException
	{
		String reportDesignName = ParameterAccessor.getReport( request );
 		ViewerAttributeBean attrBean = ( ViewerAttributeBean ) request
 				.getAttribute( "attributeBean" ); 
		IViewerReportDesignHandle design = new BirtViewerReportDesignHandle(
				null, reportDesignName );
		InputOptions options = new InputOptions( );
		options.setOption( InputOptions.OPT_REQUEST, request );
		Collection selectionList = null;
 		ParameterDefinition paramDef = parameterBean.getParameter( );