Bug 147852 [regression]Combo/listbox parameter doesn't work when put in parameter group
Description: Combo/listbox parameter doesn't work when put in parameter group Steps to reproduce: 1. New a prameter group 2. Insert a textbox parameter 3. Insert a combo/listbox parameter, input several values 4. Preview and select parameter values Expected result: Values can be selected Actual result: Once you selected a value from combo/listbox parameter list, the list would become empty.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/context/ScalarParameterBean.java
/*************************************************************************************
 * Copyright (c) 2004 Actuate Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     Actuate Corporation - Initial implementation.
 ************************************************************************************/
package org.eclipse.birt.report.context;
import java.util.Hashtable;
import java.util.Vector;
import org.eclipse.birt.report.service.api.ParameterDefinition;
import org.eclipse.birt.report.utility.ParameterAccessor;
/**
 * Parameter bean object used by parameter related jsp pages. It carries the data shared between
 * front-end jsp page and back-end fragment class. 
 * In current implementation, ScalarParameterBean uses request scope.
 * <p>
 */
public class ScalarParameterBean extends ParameterAttributeBean
{
	/**
	 * Parameter definition reference.