Hi Devender,
Use the fallowing code for setting the properties for both child and root object in Get Objects Method.
DATA lr_attr_props TYPE REF TO if_genil_obj_attr_properties.
CHECK ir_object IS BOUND.
lr_attr_props ?= ir_object->get_attr_props_obj( ).
lr_attr_props->set_all_properties( if_genil_obj_attr_properties=>CHANGEABLE ).
Regards.
Ravi Kumar . Y