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
{
						handle.setValue1( DEUtil.resolveNull( expressionValue1.getText( ) ) );
					}
					if ( expressionValue2.isVisible( ) )
					{
						handle.setValue2( DEUtil.resolveNull( expressionValue2.getText( ) ) );
					}
				}
				else
				{
					handle.setValue1( valueList );
					handle.setValue2( "" );
				}
				if ( !stylesChooser.getText( ).equals( NONE_DISPLAY_TEXT ) )
				{
					if ( handle.getStyle( ) == null )
					{
						handle.setStyle( (StyleHandle) styles.get( stylesChooser.getText( ) ) );
					}
					else if ( !stylesChooser.getText( )
							.equals( handle.getStyle( ).getName( ) ) )
					{
						handle.setStyle( (StyleHandle) styles.get( stylesChooser.getText( ) ) );
					}
					removeLocalStyleProperties( );
				}
				else
				{
					handle.setStyle( null );
					handle.getFontFamilyHandle( )