Commented Unassigned: Setting GapWidth, BaseUnit and TickLabels.Orientation for ColumnStacked charts [15226]

I need to be able to accomplish the following VBA operations on a ColumnStacked chart (the XAxis values are end of month dates, so it needs to be set up as months, otherwise the bars correspond to a single day and are very thin).

ActiveChart.Axes(xlCategory).BaseUnit = xlMonths
ActiveChart.ChartGroups(1).GapWidth = 10
ActiveChart.Axes(xlCategory).TickLabels.Orientation = xlVertical

Is it supported? I couldn't find any way to do it, but I may have overlooked some properties.
Thanks.
Comments: I am also looking for solution of this (unit as of months, and orientation/alignment of axis labels).. or else will have to use other APIs.