Adds
          an object to the composite.
        
            name - Reference name for the added object. This name can
            be used to refer the object further through VaryDisp's members and
            through the VaryDispCtx
            members. 
            obj - Object to add
            flags - Optional. If omitted the VaryDisp will
            automatically select the most appropriate way to add the object. For
            example if the object is a ScriptManager2
            or ScriptAggregate the
            script in them will be actually exposed (not the object itself). The
            flags that can be specified are:
            How to treat the object - one of the:
            &H0000 - automatic (default)
            &H0001 - As COM object
            &H0002 - As ScriptManager2, The script's functions/subs will be
            exposed
            &H0003 - As ScriptAggregate, The script's functions/subs will be
            exposed
            Members access technique:
            &H0100 - By name, The members will be called always by name
            (slow but safe)
            &H0000 - By DISPID, The DISPID of each member exposed will be
            remembered and used in further calls (faster but safe for ordinary
            COM objects only)
            Pass the context to object: 
            &H0200 - Pass the context, If the flag is specified the
            context will be passed.
            More comments:
            In automatic mode the most appropriate flags are internally set. For
            example if the added object is a ScriptManager2 or ScriptAggregate
            the script is exposed, methods are accessed by name and the context
            is passed to the script. If the object is another COM object members
            are accessed by DISPID, and context is not passed by default.
            Therefore you will need to specify flags only if this behavior is
            not what you need.
            returned value: Reference ID of the object added. Can be
            used for further references to the object.