Returns the position of the specified shape in the z-order. Read-only Long.
This property is read-only. To set the shape's position in the z-order, use the ZOrder method.
Remarks
A shape's position in the z-order corresponds to the shape's index number in the Shapes collection. For example, if there are four shapes on myDocument, the expression myDocument.Shapes(1) returns the shape at the back of the z-order, and the expression myDocument.Shapes(4) returns the shape at the front of the z-order.
Whenever you add a new shape to a collection, it’s added to the front of the z-order by default.