Bug 146159 [Regression]Changing font operation doesn't work other than the first time
Description: The first time changing operation can work well. However, Change it again, it won't work. Steps: 1.Insert lable/text to layout or master page 2.Change the font from serif to cursive, it works well 3.Change the font again Result: The action doesn't work Additional infor: build number:200606080632
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/HighlightRuleBuilder.java
rule.setProperty( HighlightRule.FONT_FAMILY_MEMBER,
							familyValue );
				}
				if ( sizeValue != null )
				{
					rule.setProperty( HighlightRule.FONT_SIZE_MEMBER, sizeValue );
				}
				if ( isItalicChanged )
				{
					rule.setProperty( HighlightRule.FONT_STYLE_MEMBER,
							italicValue );
				}
				if ( isBoldChanged )
				{
					rule.setProperty( HighlightRule.FONT_WEIGHT_MEMBER,
							weightValue );
				}
				if ( isLinethroughChanged )
				{
					rule.setProperty( HighlightRule.TEXT_LINE_THROUGH_MEMBER,
							lingthroughValue );
				}
				if ( isUnderlineChanged )
				{
					rule.setProperty( HighlightRule.TEXT_UNDERLINE_MEMBER,
							underlineValue );
				}
				
				rule.setTestExpression( DEUtil.resolveNull( expression.getText( ) ) );
				handle = provider.doAddItem( rule, handleCount );