Bug 201526 Mutil parameter value will show the mutil value[0705]
Description: Mutil parameter value will show the mutil value[0705] Step: 1. New a list parameter and select allow multiple value 2. Add some value in it. 3. Drop the parameter in layout( param["NewParameter1"] ). 4. Preview and select several value. Actual result: It will preview a object string. Expected result: The value that is selected will be previewed.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/presentation/LocalizedContentVisitor.java
* handle the label.
	 * 
	 * @param label
	 *            label content
	 */
	public Object visitLabel( ILabelContent label, Object value )
	{
		handleOnRender( label );
		processLabel( label );
		return label;
	}
	/**
	 * process the label content
	 * 
	 * <li> localize the help text
	 * <li> localize the label content
	 * <li> handle it as it is an text
	 * 
	 * @param label
	 *            label object
	 */
	protected void processLabel( ILabelContent label )
	{
		String helpText = localize( label, label.getHelpKey( ), label.getHelpText( ) );
		label.setHelpText( helpText );
		
		if ( label.getText( ) == null )
		{
			String text = localize( label, label.getLabelKey( ), label.getLabelText( ) );
			label.setText( text );