private void loadWorksheetDefinition(JSONObject worksheetDefinition) {
try {
WorkSheetDefinition workSheetDefinition = new WorkSheetDefinition();
// TODO set the encoding
workSheetDefinition.load( worksheetDefinition.toString().getBytes() );
setWorkSheetDefinition(workSheetDefinition);
} catch(Throwable t) {
SpagoBIRuntimeException serviceException;
String msg = "Impossible load worksheet definition [" + worksheetDefinition + "].";
Throwable rootException = t;