Jpdiag

Hello everyone,
I'm trying to fault a 2009 MV Agusta F4 1078 which runs on three cylinders from cold. When using jpdiag's test/reset page I can see CNG Cylinder 1-2-3-4 injector control in the drop down menu, but when I select each option nothing happens. Could someone explain to a noob what should I be looking at here
Many thanks!

chose the injector you wnat to test and press ON to switch it ON,
the fuel pump shall be hear and injector tick 5 times ( spitting fuel)