Load drawing File from Working Directory in Jlink

How to load the Files from its working directory in Jlink .I need to load the files from its working directory .

Even though i set working directory ,I cannot load the files from directory by the following code.please help me to solve this problem.

String directory=curSession.GetCurrentDirectory().toString();
String modelLocation=""+directory+"\\";
String drw_name = drawfiles[i];
ModelDescriptor desc1 = pfcModel.ModelDescriptor_Create(ModelType.MDL_DRAWING, drw_name, null);
desc1 = pfcModel.ModelDescriptor_CreateFromFileName(drw_name);
desc1.SetPath (modelLocation);
draw=(Drawing)curSession.RetrieveModelWithOpts(desc1, pfcSession.RetrieveModelOptions_Create());
draw.Display();
//Exporting to pdf
draw.Export(draw.GetFullName(), Mypdfexportinstructions);

Thanks regards,

Dinesh