             const dataProvider:ListCollectionView = new ListCollectionView(tenObjects);
 
             //when
-            UIImpersonator.addChild(_sut);
+            UIImpersonator.addElement(_sut);
             assertNotNull("UIImpersonator doesn't work correctly!", _sut.grid);
             _sut.dataProvider = dataProvider;
             _sut.sortByColumns(new <int>[0]); //sort by address.street

            const dataProvider:ListCollectionView = new ListCollectionView(tenObjects);

            //when
            UIImpersonator.addChild(_sut);
            assertNotNull("UIImpersonator doesn't work correctly!", _sut.grid);
            _sut.dataProvider = dataProvider;
            _sut.sortByColumns(new <int>[0]); //sort by address.dateMovedIn, in effect by month name

            const dataProvider:ListCollectionView = new ListCollectionView(tenObjects);

            //when
            UIImpersonator.addElement(_sut);
            assertNotNull("UIImpersonator doesn't work correctly!", _sut.grid);
            _sut.dataProvider = dataProvider;

