Now that the spark version of the Datagrid component is available, I would like to start using it in place of the old mx:Datagrid in some projects. The isuue I'm running into is that in some cases, the data is coming from a remote service call. All the sorting and filtering is handled on the backend, so I don't want to do any client-side sorting when the user clicks the header. I still need the position and direction of the sort indicator to change once the service call completes. We have an extended version of the old mx:Datagrid that can do all that, but I'm not quite sure what I would be able to override in the spark Datagrid to get the same functionality. Any suggestions would be greatly appreciated.