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
if ( image.getImageSource( ) == IImageContent.IMAGE_FILE
				|| image.getImageSource( ) == IImageContent.IMAGE_URL )
		{
			String strUri = image.getURI( );
			ReportDesignHandle reportDesign = context.getDesign( );
			URL uri = reportDesign
					.findResource( strUri, IResourceLocator.IMAGE );
			if ( uri != null )
			{
				image.setURI( uri.toExternalForm( ) );
			}
		}
		
		handleOnRender( image );
		processImage( image );
		return image;
	}
	protected void processImage( IImageContent image )
	{
		String altText = localize( image, image.getAltTextKey( ), image.getAltText( ) );
		image.setAltText( altText );
		String helpText = localize( image, image.getHelpKey( ), image.getHelpText( ) );
		image.setHelpText( helpText );
	}
	/**
	 * handle the template result.
	 * 
	 * @param foreignContent
	 */
	protected void processTemplateContent( IForeignContent foreignContent )