Change Font size of axis in Mosaic plot

[#1]

Hi

I am trying to make a Mosaic plot representing the sales of different products across different regions. I am using a Mosaic plot in Fit X by Y, but I cannot change the font size of the horisontal axis (regions in the attached table and pictures below). Alternatively, I can build the same plot using graph builder, but then I cannot add the labels to the plot (A, B, C, etc). Can anyone help me? I am using JMP 13.1.0. 

labels on the box.   

[#2]

The Font Size on the horizontal axis in the Fit Y by X plot, is controled by the font specifications in the JMP Preference.

     File==>Preferences==>Fonts==>Axis

[#3]

Thanks!!!