OpenSTAAD Objects for VBA (Do Not Seem To Work)?

Hi there,

I'm just learning how to use the OpenSTAAD and I just encountered something that seems not working. I tried adding the OpenSTAAD Library to Object Browser and it displays Output. It seems to me that some of the objects therein are not working. I tried using "Output.ObjectName" and "Geometry.ObjectName" but they don't seem to work. I am puzzled because they are all found under "Output" but I cannot use them this way. I also tried "Property.ObjectName".

Or I might be doing it incorrectly? Here's an example: "objSTAADMembForces.Output.GetNumberOfEntitiesInGROUP"

The error (debug) message I am getting is: "Object does not support property or method".

I'm attaching the screenshot of my Objects Browser.

Please help. Thank you.