can anyone tell whether i can access interface in my driver by adding hierarchical path to it , Is it possible , i heard that is other reason for using hierarchical path every time in various regions may not be reusable then we use this virtual interface or is the same static and dynamic reason this is so confusing
A driver is class based which does not allow hierarchical references. This is why you use a virtual interface handle.
You assign the virtual interface handle to the hierarchical path of the actual interface within your agent configuration object, and your driver will get the virtual interface handle from that configuration object.