I am working with Dvtk.DvtkDicomEmulators.WorklistClientServers.WorklistScp emulator.

I am creating a Worklist DataSet Collection manually by creating custom DataSets with;
dvtkDataSet.Set("0x00000000",VR.LO,"xyz");

And for the Scheduled Procedure Step Sequence, it is something like this:
dvtkDataSet.Set("0x00400100[1]/0x00080060", VR.CS, somevalue);
dvtkDataSet.Set("0x00400100[1]/0x00400001", VR.AE, someValue);
etc... etc...
etc... ..
..
..


I save these dataset files into a specific worklist folder by using;
dvtkDataSet.Write("c:\\worklist");
and then i point that folder to MwlScp.InformationModel.DataDirectory.

Everything works just fine in this method. It recieves C-Find query, and the response is totally perfect with all the attiributes i added.

But when i do not use a physical directory and add those exactly same DataSets into InformationModel, by using mwlscp.InformationModel.AddToInformationModel(dvtkDataSet);
then MwlScp does not response the Scheduled Procedure Step Sequence in C-Find-Rsp. Other top level attributes are included in the response, but only the sequence is not in the response.

I tried this for other types of sequences, i noticed that; no sequence kind of data is contained in the response when using manually adding datasets. I mean it is not only for scheduled procedure step sequence.

The summary is:
When i point a directory with InformationModel.DataDirectory for worklist information model, it works clear.
But when i manually add the exactly same DataSets into information model with no DataDirectory information, it does not response the Sheduled Procedure Step Sequence.

Why is that, what is missing?