Graph builder - reverse Y scale (only)?

[#1]

How can I reverse the Y scale in Graph Builder when using Shape files?

Unfortunately, 

Graph Builder(
	Size( 545, 458 ),
	Summary Statistic( "Median" ),
	Graph Spacing( 4 ),
	Variables( Color( :"Y-Pos"n ), Shape( :Shape_Name ) ),
	Elements( Map Shapes( ) ),
	SendToReport(
		Dispatch( {}, "", ScaleBox( 2 ), {Reversed Scale} )
	)
)

doesN't have an effect - and with   in the GUI the X Scale gets reversed as well :(

[#2]

Do the reversing in your shape file an not in graph builder (build it already reversed)

[#3]

I don't think that it will help.

I want "-20" to appear on the Y axis below 20.

But "-20" on the x axis should stay on the left.

Editing the shape fill won't affect the appearance of the plot.

I just tried to use a negative aspect ratio - without success.

[#4]

I submitted a wish to enhance the functionality of Graph Builder.
Maybe others will find the idea useful:

Graph builder + Shapes -> option to flip the map