The position in the top-left corner cell of the shape's top-left corner.
Either coordinate of the value assigned is outside the range of 0.0 to 100.0.
These percentages are expressed as distance across the associated dimension of the cell, starting at the top-left corner of the cell. For example, (0.0, 0.0) represents the top-left corner of the cell, whereas (100.0, 100.0) represents the bottom-right corner of the cell. (50.0, 10.0) would represent the location in the cell which is centered horizontally, and a tenth of the way down from the top.