I want to get status, creation date,designer of testcase of Test plan via OTA

I wrote code that can get name, id of test case. 

How do I get TS_STATUS, TS_CREATION_DATE, TS_DESIGNER for the test.

Code snippet:

                 Set TestList = TestFact.NewList(TestFilter.Text)             

                  For Each oTest In TestList             
                         Cells(k , 2).Value = oTest.Name
                        Cells(k , 4).Value = oTest.ID
                        Cells(k , 5).Value = oTest.Field("TS_STATUS")   'not working
                 Next