Popolate Grid

[bkfsec]

Hi, I can not populate a grid with a call to the server via JSON and struts. Calls to action are mapped into the struts-config.xml file

 
dataSource = new DataSource();  
		dataSource.setDataFormat(DSDataFormat.JSON);  
		dataSource.setDataURL(service/service.do);  

		DataSourceTextField networkField = new DataSourceTextField("networkName", "Network",300);
		
		dataSource.setFields(networkField);  


		final ListGrid serviceGrid = new ListGrid();
		 
		serviceGrid.setWidth100();  
		serviceGrid.setHeight(150);  
//		serviceGrid.setAutoFetchData(true);  
		serviceGrid.setShowAllRecords(true);  
		serviceGrid.setCanResizeFields(true);
		serviceGrid.setAutoFitData(Autofit.VERTICAL);  
		serviceGrid.setShowFilterEditor(true);  
		serviceGrid.setAutoFitMaxRecords(10);  
		serviceGrid.setDataSource(dataSource);

this not work