Objects in a drawing can be represented as ActiveX (VLA) objects.
When working with ActiveX methods and properties, you must refer to VLA-objects, not the ename pointer returned by functions such as entlast. VLA-objects can be converted to an ename pointer with vlax-vla-object->ename. You can also use vlax-ename->vla-object to convert an ename pointer to a VLA-object.