Silk test cannot recognize the cell under the Control (Data Grid) or items under the tree

I am using both silktest workbench and silk4j to create AUT test for an winforms application.  Looks like either of those cannot recognize the any child objects of the Data grid or tree structure in my testing application. Using object spy will always capture the whole data grid as a Control without any child objects. Same as in capture the tree.

I had to use textclick or imageClick to find the expected item (e.g. .Control("@windowClassName='AfxFrameOrView120'").TextClick("GOVT 0.875 201...")), but this is not reliable as the text is not always unique.

I am wondering if there is a way to get down to the cell of the data grid