whi doesn't work vertical justification

Who knows, pls?
i need to have "VerticalJustification by Center" in whole table.
So i have this line:

myTable.Cells.Item(i).VerticalJustification = VerticalJustification.idCenterAlign

but InDi-VBA stopes and writes "Object required". Why?

And the very similar line works properly:
myTable.Cells.Item(i).Texts.Item(1).PointSize = 5.6

Thanks