How to make a dynamic guage and chart

Hi guys, first i want to thank this helpful forum that every information helped me in my project

i'm a new user in xcelsius and i'm working on KPI project i want to know how is the same gauage and chart changes the reading according to selected button (as shown in the picture).

what i made nw is many numbers of charts and gauges behind each other and each one has a dynamic visibility but it's a stupid way

can any one help me

The program file

http://www.megafileupload.com/en/file/381442/Final-Test-rar.html