Bug 190727 [regression]Default value issue when switch report parameter from textbox to listbox.[0705]
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ParameterDialog.java
{
					inputParameter.setConcealValue( getProperty( CHECKBOX_DO_NOT_ECHO ) );
				}
			}
			else
			{
				inputParameter.setProperty( ScalarParameterHandle.CONCEAL_VALUE_PROP,
						null );
			}
			if ( sorttingArea != null && !sorttingArea.isDisposed( ) && sorttingArea.isVisible( ) )
			{
				if ( !sortKeyChooser.getText( ).equals( CHOICE_NONE ) )
				{
					inputParameter.setFixedOrder( false );
					inputParameter.setDistinct( !distinct.getSelection( ) );
					if ( sortKeyChooser.getText( ).equals( CHOICE_DISPLAY_TEXT ) )
					{
						inputParameter.setSortBy( DesignChoiceConstants.PARAM_SORT_VALUES_LABEL );
					}
					else if ( sortKeyChooser.getText( )
							.equals( CHOICE_VALUE_COLUMN ) )
					{
						inputParameter.setSortBy( DesignChoiceConstants.PARAM_SORT_VALUES_VALUE );
					}
					if ( sortDirectionChooser.getText( )
							.equals( CHOICE_ASCENDING ) )
					{
						inputParameter.setSortDirection( DesignChoiceConstants.SORT_DIRECTION_ASC );
					}
					else if ( sortDirectionChooser.getText( )