Axis.MinorTickMark (Word)

Returns or sets the type of minor tick mark for the specified axis. Possible return values are xlTickMarkCross - Crosses the axis, xlTickMarkInside - Inside the axis, xlTickMarkNone - No mark, xlTickMarkOutside - Outside the axis.

MinorTickMark can be one of the following xlTickMark constants:

With ActiveDocument.InlineShapes(1) 
 If .HasChart Then 
 .Chart.Axes(xlValue).MinorTickMark = xlTickMarkInside 
 End If 
End With