Hi,
In LabView, you can use Property Nodes (found on the Application Control palette, depending on your version of LabView) to access the properties of local data types in SequenceContext objects in LabView. You simply wire a SequenceContext object to a property node and select Locals in the node. Then, place another property node on the block diagram and wire the first property node to the new node to access the Locals' properties.
For more information about using LabView and TestStand, look at the "Using LabView With TestStand" document, specifically Appendix B "Using TestStand ActiveX APIs in LabView". This can be accessed through
http://ni.com/manuals or by opening TestStand and going to Help>>Search the TestStand Bookshelf and clicking the "Using LabView With TestStand" link.