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
* 
	 * @see org.eclipse.jface.dialogs.Dialog#createContents(org.eclipse.swt.widgets.Composite)
	 */
	protected Control createContents( Composite parent )
	{
		GridData gdata;
		GridLayout glayout;
		refreshList( );
		Composite contents = new Composite( parent, SWT.NONE );
		contents.setLayout( new GridLayout( ) );
		contents.setLayoutData( new GridData( GridData.FILL_BOTH ) );
		createTitleArea( contents );
		Composite composite = new Composite( contents, SWT.NONE );
		glayout = new GridLayout( );
		glayout.marginHeight = 0;
		glayout.marginWidth = 0;
		glayout.verticalSpacing = 0;
		composite.setLayout( glayout );
		composite.setLayoutData( new GridData( GridData.FILL_BOTH ) );
		applyDialogFont( composite );
		initializeDialogUnits( composite );
		Composite innerParent = (Composite) createDialogArea( composite );
		createButtonBar( composite );
		
		Label lb = new Label( innerParent, SWT.NONE );
		lb.setText( Messages.getString( "HighlightRuleBuilderDialog.text.Condition" ) ); 
		Composite condition = new Composite( innerParent, SWT.NONE );
		gdata =  new GridData( GridData.FILL_HORIZONTAL );
		gdata.heightHint = 185;
		condition.setLayoutData( gdata );