Bug 209126 DataException throws out when set highlight condition in sub-report[0302]
Description: Set highlight condition in sub-report, when "select value..." in the highlight dialog, DataException throws out. Build version:2.3.0.v20071108-0800 Steps to reproduce: 1.Get the attached report design file, which contains a sub-report. 2.Select the inner table, and then go to "highlight" tab in the property editor view to set a highlight rule. When click "select value...", DataException throws out. Error: The expression's value can not be retrieved. An error happened in data type conversion. Can not convert the value of org.eclipse.birt.data.engine.script.DataExceptionMocker@79c17b to Integer type.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/HighlightRuleBuilder.java
valueList.remove( index );
						valueList.add( index, result );
						tableViewer.refresh( );
						table.select( index );
					}
					updateButtons( );
				}
				else
				{
					editBtn.setEnabled( false );
				}
			}
		} );
		tableViewer = new TableViewer( table );
		tableViewer.setUseHashlookup( true );
		tableViewer.setColumnProperties( columNames );
		tableViewer.setLabelProvider( tableLableProvier );
		tableViewer.setContentProvider( tableContentProvider );
		Composite rightPart = new Composite( valueListComposite, SWT.NONE );
		data = new GridData(  GridData.FILL_BOTH | GridData.HORIZONTAL_ALIGN_BEGINNING | GridData.VERTICAL_ALIGN_END);
		rightPart.setLayoutData( data );
		layout = new GridLayout( );
		layout.makeColumnsEqualWidth = true;
		rightPart.setLayout( layout );
		editBtn = new Button( rightPart, SWT.PUSH );
		editBtn.setText( Messages.getString( "FilterConditionBuilder.button.edit" ) );
		editBtn.setToolTipText( Messages.getString( "FilterConditionBuilder.button.edit.tooltip" ) );
		setButtonLayoutData( editBtn );
		editBtn.addSelectionListener( new SelectionListener( ) {
			public void widgetDefaultSelected( SelectionEvent e )