Webservices - Listing all tasks/subtask - folder_getEntries

Hi,

I'm getting list of Tasks from the Tasks folder with the "folder_getEntries" operation.
The entries are sorted by modification date.

Is there any way, how to sort them manually by "No." as in the Tasks List in the workspace?

In the response XML are:
- docLevel
- docNumber

attributes, but docLevel is always 1, and docNumber looks like the sequence number of the task.

Also with "folder_getEntry" operation, I don't get any other attributes, that would look like the "No." column


Next question:
How do I find out that task is a subtask?



Regards
Jiri