property is set to xlScale (otherwise, this property is ignored). Read/write Long for all objects, except for the Walls object, which is read/write Variant.
expression.PictureUnit
expression Required. An expression that returns one of the above objects.
Example
This example sets series one to stack pictures and uses each picture to represent five units. The example should be run on a 2-D column chart with picture data markers.
With myChart.SeriesCollection(1)
.PictureType = xlScale
.PictureUnit = 5
End With