Chart.RightAngleAxes (Word)

True if the chart axes are at right angles, independent of chart rotation or elevation. Read/write Boolean.

This property applies only to 3D line, column, and bar charts. If this property is set to True, the Perspective property is ignored.

With ActiveDocument.InlineShapes(1) 
 If .HasChart Then 
 .Chart.RightAngleAxes = True 
 End If 
End With