Bug 177296 Redundant Values are added to parameter list in preview mode.[0705]
Description: Redundant Values are added to parameter list in preview mode. Build number:2.2.0.v20070312 Steps to reproduce: 1. Open attached report. 2. Preview. 3. Select datetime value and click OK. 4. Click Show Report Parameters button, check values Expected result: Values are unchanged and only one datetime value in list. Actual result: Two same datetime values in list.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/service/actionhandler/BirtGetCascadeParameterActionHandler.java
continue;
			}
			else if ( paramName.startsWith( ParameterAccessor.PREFIX_ISLOCALE ) )
			{
				
				paramName = paramName.replaceFirst(
						ParameterAccessor.PREFIX_ISLOCALE, "" ); 
				isLocale = true;
			}
			
			ParameterDefinition parameter = attrBean
					.findParameterDefinition( paramName );
			if ( parameter == null )
				continue;
			
			String format = parameter.getPattern( );
			String dataType = ParameterDataTypeConverter
					.ConvertDataType( parameter.getDataType( ) );
			Object paramValue = DataUtil.validate( dataType, format, param
					.getValue( ), attrBean.getLocale( ), isLocale );
			paramMap.put( paramName, paramValue );
		}
		cascParamMap = getParameterSelectionLists( designHandle, paramMap,
				options, attrBean );
		/**
		 * prepare response.
		 */
		CascadeParameter cascadeParameter = new CascadeParameter( );
		if ( cascParamMap != null && cascParamMap.size( ) > 0 )
		{