Not able to select Items in POPUP menu using Test Complete

There is a help topic somewhere on object recognition. I would seek that out. You need to determine what kind of tree that is, and if possible, let Test Complete know that it is a tree. For instance, it may be as simple as putting the class name in the Object Mapping project property. Or if it is an MSAA object, adding the class name there. Seek the help topic on object recognition, and I think you will find help.