How to plot 2 vswr or more in one plot on CST Microwave studio 2011?

Hello
I want to compare 2 vswr from different antennas, i use same range frequencies, is posible to plot 2 vswr in one plot together on CST microwave studio?
or any tool/software can plot 2 vswr or more together?
please tell me if anybody know :)
Thank you before

Any 2D-plot can be exported as a *.txt file and can be imported to matlab.
while you're viewing the plot go to post processing tab and then import/export key next you'll be able to get the text of your plot, if you choose the plot data (ASCII) bottom.
then you'll be able to do as you wish with it in matlab.