Just to emphasis a point; the index number of the table collection is the ORDER in the document. A table does not have an explicit index number. Or rather, it does have an explicit number, but the number is derived dynamically from the order the table is in. So if Tables(4) has a table inserted before it, it is now Tables(5). And if Tables(4) is moved after Tables (7), it now becomes Tables(7) - as Tables(7) becomes Tables(6), because Tables(4) is no longer there.